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DSA SHEET ARCHIT AGGARWAL.html
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DSA SHEET ARCHIT AGGARWAL.html
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<!DOCTYPE NETSCAPE-Bookmark-file-1>
<!-- This is an automatically generated file.
It will be read and overwritten.
DO NOT EDIT! -->
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
<TITLE>Bookmarks</TITLE>
<H1>Bookmarks</H1>
<DL><p>
<DT><H3 ADD_DATE="1663582001" LAST_MODIFIED="0" PERSONAL_TOOLBAR_FOLDER="true">Bookmarks Bar</H3>
<DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">DSA Sheet</H3>
<DL><p>
<DT><A HREF="https://docs.google.com/spreadsheets/d/1spv5ZP7x1cZcFZXz2Fo_DAaM5jnlJDxWSziZ5ctUb2A/edit#gid=0" ADD_DATE="1663582039">DSA Sheet</A>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Getting Started</H3>
<DL><p>
<DT><A HREF="https://www.scaler.com/topics/java/" ADD_DATE="1663582039">Java Programming Basics</A>
<DT><A HREF="https://www.youtube.com/playlist?list=PLTAWODwDBzMxhohckS2F36S-LjnyF_ibZ" ADD_DATE="1663582039">Getting Started</A>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">C++ Programming Basics</H3>
<DL><p>
<DT><A HREF="https://www.scaler.com/topics/cpp/" ADD_DATE="1663582039">C++ Basics</A>
<DT><A HREF="https://drive.google.com/file/d/1Cyex0td1F5qPqzIW4R5vM8sK6Y0EGwpU/view" ADD_DATE="1663582039">My Notes - C++</A>
<DT><A HREF="https://drive.google.com/file/d/1CkJPsCG7t4Rpn02EHEFEUKH240W5OhNp/view" ADD_DATE="1663582039">My Notes - STL</A>
<DT><A HREF="https://www.youtube.com/playlist?list=PLTAWODwDBzMzMuMW-NrA5-icKFZYqNC8S" ADD_DATE="1663582039">Basic Pointers in C++</A>
<DT><A HREF="https://docs.google.com/spreadsheets/d/1spv5ZP7x1cZcFZXz2Fo_DAaM5jnlJDxWSziZ5ctUb2A/edit#gid=1079816901" ADD_DATE="1663582039">Pointers in C++</A>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">STL C++</H3>
<DL><p>
<DT><A HREF="https://www.geeksforgeeks.org/the-c-standard-template-library-stl/" ADD_DATE="1663582039">STL Basics</A>
<DT><A HREF="https://www.scaler.com/topics/cpp/templates-in-cpp/" ADD_DATE="1663582039">Templates in C++</A>
<DT><A HREF="https://www.scaler.com/topics/cpp/generic-programming-in-cpp/" ADD_DATE="1663582039">Generic Programming in C++</A>
<DT><A HREF="https://www.geeksforgeeks.org/iterators-c-stl/" ADD_DATE="1663582039">Iterators in C++</A>
<DT><A HREF="https://www.geeksforgeeks.org/c-magicians-stl-algorithms/" ADD_DATE="1663582039">Inbuilt Algorithms in C++</A>
<DT><A HREF="https://www.geeksforgeeks.org/sorting-a-vector-in-c/" ADD_DATE="1663582039">Comparator in C++</A>
<DT><A HREF="https://www.scaler.com/topics/cpp/pair-in-cpp/" ADD_DATE="1663582039">Pair in C++</A>
<DT><A HREF="https://www.geeksforgeeks.org/tuples-in-c/" ADD_DATE="1663582039">Tuples in C++</A>
<DT><A HREF="https://www.programiz.com/cpp-programming/stl-containers" ADD_DATE="1663582039">Containers in C++</A>
<DT><A HREF="https://www.scaler.com/topics/cpp/strings-in-cpp/" ADD_DATE="1663582039">Strings in C++</A>
<DT><A HREF="https://www.geeksforgeeks.org/tokenizing-a-string-cpp/" ADD_DATE="1663582039">String Tokenizer in C++</A>
<DT><A HREF="https://www.scaler.com/topics/unordered_map-cpp/" ADD_DATE="1663582039">Hashing in C++</A>
<DT><A HREF="https://www.geeksforgeeks.org/how-to-create-an-unordered_map-of-user-defined-class-in-cpp/" ADD_DATE="1663582039">Custom Hash Function</A>
<DT><A HREF="https://www.programiz.com/cpp-programming/functors" ADD_DATE="1663582039">Functors in C++</A>
<DT><A HREF="https://www.programiz.com/cpp-programming/priority-queue" ADD_DATE="1663582039">Priority Queue in C++</A>
<DT><A HREF="https://www.geeksforgeeks.org/stl-priority-queue-for-structure-or-class/" ADD_DATE="1663582039">Custom Priority Queue</A>
<DT><A HREF="https://www.geeksforgeeks.org/difference-between-set-multiset-unordered_set-unordered_multiset-in-cpp/" ADD_DATE="1663582039">Sets in C++</A>
<DT><A HREF="https://www.geeksforgeeks.org/c-bitset-and-its-application/" ADD_DATE="1663582039">Bitset in C++</A>
</DL><p>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Basic Java Problems</H3>
<DL><p>
<DT><A HREF="https://codingbat.com/java" ADD_DATE="1663582039">Java Practice Problems</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/start-coding-java/1" ADD_DATE="1663582039">Hello World - I</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/the-new-line-java/1" ADD_DATE="1663582039">Hello World - II</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/learn-to-comment-java/1" ADD_DATE="1663582039">Java Comments</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/data-types-java/1" ADD_DATE="1663582039">Java Datatypes</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/java-basic-data-types0041/1" ADD_DATE="1663582039">Java Inputs</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/nextline-and-next/1" ADD_DATE="1663582039">Next vs Nextline</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/java-strings-set-15112/1" ADD_DATE="1663582039">Concatenate Strings</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/java-if-else-decision-making0924/1" ADD_DATE="1663582039">Java If Else</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/vowel-or-not0831/1" ADD_DATE="1663582039">Check Vowel</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/change-the-string3541/1" ADD_DATE="1663582039">Change Case of String</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/even-odd/1" ADD_DATE="1663582039">Check Even Odd</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/java-switch-case-statement3529/1" ADD_DATE="1663582039">Java Switch Case</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/java-loops-set-11726/1" ADD_DATE="1663582039">Java Loops</A>
<DT><A HREF="https://www.programiz.com/java-programming/examples/swap-two-numbers" ADD_DATE="1663582039">Swap Two Integers</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Digit Traversals</H3>
<DL><p>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/count-digits5716/1" ADD_DATE="1663582039">Count Digits of Number</A>
<DT><A HREF="https://leetcode.com/problems/reverse-integer/" ADD_DATE="1663582039">Reverse Integer</A>
<DT><A HREF="https://leetcode.com/problems/a-number-after-a-double-reversal/" ADD_DATE="1663582039">Double Reversal</A>
<DT><A HREF="https://leetcode.com/problems/subtract-the-product-and-sum-of-digits-of-an-integer/" ADD_DATE="1663582039">Sum & Product of Digits</A>
<DT><A HREF="https://leetcode.com/problems/self-dividing-numbers/" ADD_DATE="1663582039">Self Dividing Numbers</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/armstrong-numbers2727/1" ADD_DATE="1663582039">Amstrong Number</A>
<DT><A HREF="https://pepcoding.com/resources/online-java-foundation/getting-started/rotate-a-number-official/ojquestion" ADD_DATE="1663582039">Rotate Digits of Number</A>
<DT><A HREF="https://www.geeksforgeeks.org/rotate-digits-of-a-given-number-by-k/" ADD_DATE="1663582039">Rotate Digits of Number</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/getting-started/inverse-of-a-number-official/ojquestion" ADD_DATE="1663582039">Inverse of Number</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Basic Math Problems</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/nim-game/" ADD_DATE="1663582039">Stones Remove Game</A>
<DT><A HREF="https://leetcode.com/problems/divisor-game/" ADD_DATE="1663582039">Divisor Game</A>
<DT><A HREF="https://leetcode.com/problems/add-digits/" ADD_DATE="1663582039">Digital Root</A>
<DT><A HREF="https://leetcode.com/problems/bulb-switcher/" ADD_DATE="1663582039">Bulb Switcher</A>
<DT><A HREF="https://leetcode.com/problems/count-of-matches-in-tournament/" ADD_DATE="1663582039">Tournament Matches</A>
<DT><A HREF="https://leetcode.com/problems/count-odd-numbers-in-an-interval-range/" ADD_DATE="1663582039">Count Odd In Range</A>
<DT><A HREF="https://leetcode.com/problems/water-bottles/" ADD_DATE="1663582039">Max Water Bottles</A>
<DT><A HREF="https://leetcode.com/problems/count-square-sum-triples/" ADD_DATE="1663582039">Pythagorean Triplets</A>
<DT><A HREF="https://leetcode.com/problems/factorial-trailing-zeroes/" ADD_DATE="1663582039">Factorial Trailing 0s</A>
<DT><A HREF="https://leetcode.com/problems/ugly-number/" ADD_DATE="1663582039">Check Ugly Number</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/series-gp4646/1" ADD_DATE="1663582039">Nth Term of GP</A>
<DT><A HREF="https://leetcode.com/problems/number-of-days-between-two-dates/" ADD_DATE="1663582039">Days Between Dates</A>
<DT><A HREF="https://leetcode.com/problems/day-of-the-year/" ADD_DATE="1663582039">Day of the Year</A>
<DT><A HREF="https://leetcode.com/problems/day-of-the-week/" ADD_DATE="1663582039">Day of the Week</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/ninja-s-watch_1264948" ADD_DATE="1663582039">Next Closest Time</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Pattern Printing</H3>
<DL><p>
<DT><A HREF="https://takeuforward.org/strivers-a2z-dsa-course/must-do-pattern-problems-before-starting-dsa/" ADD_DATE="1663582039">Pattern Printing</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/pattern-printing1347/1" ADD_DATE="1663582039">Stars Pattern</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/patterns/pattern-type-1-official/ojquestion" ADD_DATE="1663582039">Lower RIght Triangle</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/patterns/pattern-type-2-official/ojquestion" ADD_DATE="1663582039">Upper Left Triangle</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/patterns/pattern-type-3-official/ojquestion" ADD_DATE="1663582039">Lower Right Triangle</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/give-me-triangle_893275" ADD_DATE="1663582039">Upper Right Triangle</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/diamond-of-stars_893297" ADD_DATE="1663582039">Diamond Pattern</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/patterns/design-pattern-6-official/ojquestion" ADD_DATE="1663582039">Hollow Diamond</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/patterns/design-pattern-10-official/ojquestion" ADD_DATE="1663582039">Diamond Border</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/patterns/design-pattern-7-official/ojquestion" ADD_DATE="1663582039">Backward Slash</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/patterns/design-pattern-8-official/ojquestion" ADD_DATE="1663582039">Forward Slash</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/patterns/design-pattern-9-official/ojquestion" ADD_DATE="1663582039">Cross of Stars</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/number-x_893302" ADD_DATE="1663582039">Cross of Numbers</A>
<DT><A HREF="https://pepcoding.com/resources/online-java-foundation/patterns/design-pattern-14-official/ojquestion" ADD_DATE="1663582039">Table of Number</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/number-pattern_893191" ADD_DATE="1663582039">Pattern of Numbers - I</A>
<DT><A HREF="https://pepcoding.com/resources/online-java-foundation/patterns/design-pattern-15-official/ojquestion" ADD_DATE="1663582039">Pattern of Numbers - II</A>
<DT><A HREF="https://pepcoding.com/resources/online-java-foundation/patterns/design-pattern-16-official/ojquestion" ADD_DATE="1663582039">Pattern of Numbers - III</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/patterns/design-pattern-12-official/ojquestion" ADD_DATE="1663582039">Fibonacci Pattern</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/mirror-image-of-triangle_893344" ADD_DATE="1663582039">Mirror Image Triangle</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/patterns/design-pattern-17-official/ojquestion" ADD_DATE="1663582039">Arrow Pattern</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/patterns/design-pattern-18-official/ojquestion" ADD_DATE="1663582039">Empty Hour Glass</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/patterns/design-pattern-19-official/ojquestion" ADD_DATE="1663582039">Swastik Pattern</A>
<DT><A HREF="https://pepcoding.com/resources/online-java-foundation/patterns/design-pattern-20-official/ojquestion" ADD_DATE="1663582039">W Pattern</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Time & Space Complexity</H3>
<DL><p>
<DT><A HREF="https://www.youtube.com/watch?v=UQ-HoCneuiA&ab_channel=ArchitAggarwal" ADD_DATE="1663582039">Time & Space Complexity - I</A>
<DT><A HREF="https://www.youtube.com/watch?v=BceGLE8P4hw&ab_channel=ArchitAggarwal" ADD_DATE="1663582039">Time & Space Complexity - II</A>
<DT><A HREF="https://www.scaler.com/topics/analysis-of-algorithm/" ADD_DATE="1663582039">Algorithm Analysis</A>
<DT><A HREF="https://www.scaler.com/topics/data-structures/time-complexity-in-data-structure/" ADD_DATE="1663582039">Time Complexity</A>
<DT><A HREF="https://www.scaler.com/topics/data-structures/masters-theorem/" ADD_DATE="1663582039">Master's Theorem</A>
<DT><A HREF="https://www.scaler.com/topics/data-structures/space-complexity-in-data-structure/" ADD_DATE="1663582039">Space Complexity</A>
<DT><A HREF="https://www.interviewbit.com/courses/programming/time-complexity/" ADD_DATE="1663582039">Complexity Practice</A>
</DL><p>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Arrays & Strings</H3>
<DL><p>
<DT><A HREF="https://takeuforward.org/interviews/tcs-nqt-coding-sheet-tcs-coding-questions/" ADD_DATE="1663582039">Arrays and Strings Practice</A>
<DT><A HREF="https://www.youtube.com/playlist?list=PLTAWODwDBzMzqSJu61VNH1x6kTNxZFOzK" ADD_DATE="1663582039">Arrays & Strings - Foundation</A>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Array & String Theory</H3>
<DL><p>
<DT><A HREF="https://www.scaler.com/topics/data-structures/array-data-structure/" ADD_DATE="1663582039">Array Data Structure</A>
<DT><A HREF="https://www.scaler.com/topics/java/array-in-java/" ADD_DATE="1663582039">Java Arrays</A>
<DT><A HREF="https://www.scaler.com/topics/java/one-dimensional-array-in-java/" ADD_DATE="1663582039">Java 1D Arrays</A>
<DT><A HREF="https://www.scaler.com/topics/java/arrays-class-in-java/" ADD_DATE="1663582039">Array Utility Class</A>
<DT><A HREF="https://www.scaler.com/topics/data-structures/string-in-data-structure/" ADD_DATE="1663582039">String Data Structure</A>
<DT><A HREF="https://www.scaler.com/topics/java/string-in-java/" ADD_DATE="1663582039">Java Strings</A>
<DT><A HREF="https://www.scaler.com/topics/java/string-pool-in-java/" ADD_DATE="1663582039">String Pool in Java</A>
<DT><A HREF="https://www.scaler.com/topics/why-string-is-immutable-in-java/" ADD_DATE="1663582039">String Immutability</A>
<DT><A HREF="https://www.scaler.com/topics/java/strings-in-java-vs-strings-in-cpp/" ADD_DATE="1663582039">Java vs C++ Strings</A>
<DT><A HREF="https://www.scaler.com/topics/java/stringbuffer-in-java/" ADD_DATE="1663582039">Java StringBuffer</A>
<DT><A HREF="https://www.scaler.com/topics/java/stringbuilder-in-java/" ADD_DATE="1663582039">Java StringBuilder</A>
<DT><A HREF="https://www.scaler.com/topics/java/string-buffer-and-string-builder/" ADD_DATE="1663582039">String Buffer vs Builder</A>
<DT><A HREF="https://www.scaler.com/topics/java/multidimensional-array-in-java/" ADD_DATE="1663582039">Multidimensional Array</A>
<DT><A HREF="https://www.scaler.com/topics/java/jagged-array-in-java/" ADD_DATE="1663582039">Jagged Arrays</A>
<DT><A HREF="https://www.scaler.com/topics/java/collections-in-java/" ADD_DATE="1663582039">Java Collections</A>
<DT><A HREF="https://www.scaler.com/topics/java/iterable-interface-in-java/" ADD_DATE="1663582039">Iterable Interface</A>
<DT><A HREF="https://www.scaler.com/topics/java/arraylist-in-java/" ADD_DATE="1663582039">Java ArrayList</A>
<DT><A HREF="https://www.scaler.com/topics/java/vector-in-java/" ADD_DATE="1663582039">Java Vector</A>
<DT><A HREF="https://www.scaler.com/topics/stringtokenizer-in-java/" ADD_DATE="1663582039">String Tokenizer Java</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Reverse Array or String</H3>
<DL><p>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/reverse-an-array/0" ADD_DATE="1663582039">Reverse Array</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/rotate-array-by-n-elements/0" ADD_DATE="1663582039">Left Rotate Array</A>
<DT><A HREF="https://leetcode.com/problems/rotate-array/" ADD_DATE="1663582039">Right Rotate Array</A>
<DT><A HREF="https://leetcode.com/problems/reverse-string/" ADD_DATE="1663582039">Reverse String</A>
<DT><A HREF="https://leetcode.com/problems/reverse-string-ii/" ADD_DATE="1663582039">Reverse String Range</A>
<DT><A HREF="https://leetcode.com/problems/reverse-words-in-a-string/" ADD_DATE="1663582039">Reverse Words - I</A>
<DT><A HREF="https://leetcode.com/problems/reverse-words-in-a-string-iii/" ADD_DATE="1663582039">Reverse Words - II</A>
<DT><A HREF="https://leetcode.com/problems/reverse-vowels-of-a-string/" ADD_DATE="1663582039">Reverse Vowels</A>
<DT><A HREF="https://leetcode.com/problems/valid-palindrome/" ADD_DATE="1663582039">Palindromic String</A>
<DT><A HREF="https://leetcode.com/problems/palindrome-number/" ADD_DATE="1663582039">Palindromic Integer</A>
<DT><A HREF="https://leetcode.com/problems/valid-palindrome-ii/" ADD_DATE="1663582039">Palindrome After Deletion</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">String to Integer</H3>
<DL><p>
<DT><A HREF="https://www.scaler.com/topics/int-to-string-in-java/" ADD_DATE="1663582039">Integer to String</A>
<DT><A HREF="https://leetcode.com/problems/string-to-integer-atoi/" ADD_DATE="1663582039">String to Integer</A>
<DT><A HREF="https://www.scaler.com/topics/string-to-int-in-java/" ADD_DATE="1663582039">String to Integer</A>
<DT><A HREF="https://leetcode.com/problems/valid-number/" ADD_DATE="1663582039">Valid Number</A>
<DT><A HREF="https://leetcode.com/problems/excel-sheet-column-title/" ADD_DATE="1663582039">Excel Column No to Title</A>
<DT><A HREF="https://leetcode.com/problems/excel-sheet-column-number/" ADD_DATE="1663582039">Excel Column Title to No</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Linear Traversal</H3>
<DL><p>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/search-an-element-in-an-array-1587115621/1" ADD_DATE="1663582039">Linear Search</A>
<DT><A HREF="https://www.programiz.com/dsa/linear-search" ADD_DATE="1663582039">Linear Search</A>
<DT><A HREF="https://www.interviewbit.com/problems/max-min-05542f2f-69aa-4253-9cc7-84eb7bf739c4/" ADD_DATE="1663582039">Maximum & Minimum</A>
<DT><A HREF="https://www.geeksforgeeks.org/maximum-and-minimum-in-an-array/" ADD_DATE="1663582039">Maximum & Minimum</A>
<DT><A HREF="https://leetcode.com/problems/smallest-range-i/" ADD_DATE="1663582039">Smallest Range</A>
<DT><A HREF="https://leetcode.com/problems/maximum-product-of-two-elements-in-an-array/" ADD_DATE="1663582039">Second Largest</A>
<DT><A HREF="https://leetcode.com/problems/valid-mountain-array/" ADD_DATE="1663582039">Valid Mountain Array</A>
<DT><A HREF="https://leetcode.com/problems/check-if-array-is-sorted-and-rotated/" ADD_DATE="1663582039">Is Array Sorted Rotated</A>
<DT><A HREF="https://leetcode.com/problems/distribute-candies-to-people/" ADD_DATE="1663582039">Distribute Candies</A>
<DT><A HREF="https://leetcode.com/problems/number-of-good-pairs/" ADD_DATE="1663582039">Count Equal Pairs</A>
<DT><A HREF="https://leetcode.com/problems/range-addition-ii/" ADD_DATE="1663582039">Range Addition</A>
<DT><A HREF="https://leetcode.com/problems/minimum-time-visiting-all-points/" ADD_DATE="1663582039">Visiting All Points</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/all-substrings_1262347" ADD_DATE="1663582039">Subarray or Substrings</A>
<DT><A HREF="https://leetcode.com/problems/sum-of-all-odd-length-subarrays/" ADD_DATE="1663582039">Sum of Odd Subarrays</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/the-celebrity-problem/1" ADD_DATE="1663582039">Celebrity Problem - I</A>
<DT><A HREF="https://leetcode.com/problems/find-the-town-judge/" ADD_DATE="1663582039">Celebrity Problem - II</A>
<DT><A HREF="https://leetcode.com/problems/non-decreasing-array/" ADD_DATE="1663582039">Non Decreasing Array</A>
<DT><A HREF="https://leetcode.com/problems/pairs-of-songs-with-total-durations-divisible-by-60/" ADD_DATE="1663582039">Target Modulo Sum Pair </A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Prefix Sum Array</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/running-sum-of-1d-array/" ADD_DATE="1663582039">Running Sum</A>
<DT><A HREF="https://leetcode.com/problems/find-the-highest-altitude/" ADD_DATE="1663582039">Highest Altitude Point</A>
<DT><A HREF="https://leetcode.com/problems/minimum-value-to-get-positive-step-by-step-sum/" ADD_DATE="1663582039">Positive Step Sum</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/leaders-in-an-array-1587115620/1" ADD_DATE="1663582039">Leaders in Array</A>
<DT><A HREF="https://leetcode.com/problems/find-pivot-index/" ADD_DATE="1663582039">Equillibrium Point</A>
<DT><A HREF="https://leetcode.com/problems/ways-to-make-a-fair-array/" ADD_DATE="1663582039">Balanced Array</A>
<DT><A HREF="https://leetcode.com/problems/product-of-array-except-self/" ADD_DATE="1663582039">Product Array Puzzle</A>
<DT><A HREF="https://leetcode.com/problems/maximize-distance-to-closest-person/" ADD_DATE="1663582039">Max Closest Person</A>
<DT><A HREF="https://leetcode.com/problems/sum-of-even-numbers-after-queries/" ADD_DATE="1663582039">Sum of Even Nos Queries</A>
<DT><A HREF="https://leetcode.com/problems/number-of-times-binary-string-is-prefix-aligned/" ADD_DATE="1663582039">Prefix Aligned Binary String</A>
<DT><A HREF="https://leetcode.com/problems/shifting-letters/" ADD_DATE="1663582039">Shifting Letters</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/value-of-polynomial2413/1" ADD_DATE="1663582039">Polynomial Evaluation</A>
<DT><A HREF="https://www.geeksforgeeks.org/horners-method-polynomial-evaluation/" ADD_DATE="1663582039">Polynomial Evaluation</A>
<DT><A HREF="https://www.geeksforgeeks.org/prefix-sum-array-implementation-applications-competitive-programming/" ADD_DATE="1663582039">Prefix Sum Array</A>
<DT><A HREF="https://leetcode.com/problems/range-sum-query-immutable/" ADD_DATE="1663582039">Range Sum Query 1D</A>
<DT><A HREF="https://leetcode.com/problems/range-sum-query-2d-immutable/" ADD_DATE="1663582039">Range Sum Query 2D</A>
<DT><A HREF="https://www.youtube.com/watch?v=nZe7P674xZo&ab_channel=Luv" ADD_DATE="1663582039">Range Sum Query</A>
<DT><A HREF="https://www.geeksforgeeks.org/difference-array-range-update-query-o1/" ADD_DATE="1663582039">Difference Array</A>
<DT><A HREF="https://www.spoj.com/problems/UPDATEIT/" ADD_DATE="1663582039">Range Update Queries - I</A>
<DT><A HREF="https://cses.fi/problemset/task/1651" ADD_DATE="1663582039">Range Update Queries - II</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Matrix or 2D Array</H3>
<DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Basic Matrix Traversal</H3>
<DL><p>
<DT><A HREF="https://www.scaler.com/topics/two-dimensional-array-in-java/" ADD_DATE="1663582039">2D Array or Matrix Theory</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/two-dimensional-world/0" ADD_DATE="1663582039">Print Matrix Row Wise</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/library/row-wise-vs-column-wise-traversal-of-a-matrix" ADD_DATE="1663582039">Print Matix Column Wise</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/print-matrix-in-snake-pattern-1587115621/1" ADD_DATE="1663582039">Wave or Snake Traversal</A>
<DT><A HREF="https://www.geeksforgeeks.org/print-matrix-reverse-wave-form/" ADD_DATE="1663582039">Reverse Wave Traversal</A>
<DT><A HREF="https://www.geeksforgeeks.org/searching-algorithms-for-a-2d-arrays-matrix/" ADD_DATE="1663582039">Searching in Matrix</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/exit-point-in-a-matrix0905/1" ADD_DATE="1663582039">Exit Point in Matrix</A>
<DT><A HREF="https://leetcode.com/problems/convert-1d-array-into-2d-array/" ADD_DATE="1663582039">Convert 1D Array to 2D</A>
<DT><A HREF="https://leetcode.com/problems/shift-2d-grid/" ADD_DATE="1663582039">Shift 2D Grid</A>
<DT><A HREF="https://leetcode.com/problems/reshape-the-matrix/" ADD_DATE="1663582039">Reshape Matrix</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Two Matrices</H3>
<DL><p>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/identical-matrices1042/1" ADD_DATE="1663582039">Identical Matrices</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/addition-of-two-square-matrices4916/1" ADD_DATE="1663582039">Add Matrices</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/multiply-matrices/1" ADD_DATE="1663582039">Multiply Matrices</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Rotate Matrix</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/transpose-matrix/" ADD_DATE="1663582039">Transpose Matrix</A>
<DT><A HREF="https://leetcode.com/problems/rotate-image/" ADD_DATE="1663582039">Rotate 90D Clockwise</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/rotate-by-90-degree-1587115621/1" ADD_DATE="1663582039">Rotate 90D Anticlockwise</A>
<DT><A HREF="https://www.techiedelight.com/inplace-rotate-matrix-180-degrees/" ADD_DATE="1663582039">Rotate 180D Clockwise</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/c-matrix-rotation-by-180-degree0745/1" ADD_DATE="1663582039">Rotate 180D Anticlockwize</A>
<DT><A HREF="https://leetcode.com/problems/determine-whether-matrix-can-be-obtained-by-rotation/" ADD_DATE="1663582039">Equal Matrix Rotations</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Diagonal Traversal</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/diagonal-traverse-ii/" ADD_DATE="1663582039">Diagonal Traversal - BL to TR</A>
<DT><A HREF="https://leetcode.com/problems/diagonal-traverse/" ADD_DATE="1663582039">Diagonal Traversal - Zig Zag</A>
<DT><A HREF="https://leetcode.com/problems/sort-the-matrix-diagonally/" ADD_DATE="1663582039">Diagonal Traversal - TL to BR</A>
<DT><A HREF="https://leetcode.com/problems/matrix-diagonal-sum/" ADD_DATE="1663582039">Matrix Diagonal Sum</A>
<DT><A HREF="https://leetcode.com/problems/toeplitz-matrix/" ADD_DATE="1663582039">Toeplitz Matrix</A>
<DT><A HREF="https://leetcode.com/problems/check-if-matrix-is-x-matrix/" ADD_DATE="1663582039">Check X Matrix</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/sum-of-upper-and-lower-triangles-1587115621/1" ADD_DATE="1663582039">Upper Lower Triangle</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Rows & Columns</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/lucky-numbers-in-a-matrix/" ADD_DATE="1663582039">Saddle Point in Matrix</A>
<DT><A HREF="https://leetcode.com/problems/set-matrix-zeroes/" ADD_DATE="1663582039">Set Matrix Zeros</A>
<DT><A HREF="https://leetcode.com/problems/valid-tic-tac-toe-state/" ADD_DATE="1663582039">Valid Tic Tac Toe State</A>
<DT><A HREF="https://leetcode.com/problems/find-winner-on-a-tic-tac-toe-game/" ADD_DATE="1663582039">Winner of Tic Tac Toe</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/sums-of-i-th-row-and-i-th-column3054/1" ADD_DATE="1663582039">Equal Row Column Sum</A>
<DT><A HREF="https://leetcode.com/problems/check-if-every-row-and-column-contains-all-numbers/" ADD_DATE="1663582039">Rows Columns Valid Matrix</A>
<DT><A HREF="https://leetcode.com/problems/game-of-life/" ADD_DATE="1663582039">Game of Life</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Spiral Matrix Traversal</H3>
<DL><p>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/boundary-elements-of-matrix1102/1" ADD_DATE="1663582039">Boundary Traversal</A>
<DT><A HREF="https://leetcode.com/problems/spiral-matrix/" ADD_DATE="1663582039">Spiral Matrix Traversal</A>
<DT><A HREF="https://leetcode.com/problems/spiral-matrix-ii/" ADD_DATE="1663582039">Fill Matrix in Spiral Order</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/reverse-spiral-form-of-matrix4033/1" ADD_DATE="1663582039">Reverse Spiral Matrix</A>
<DT><A HREF="https://leetcode.com/problems/spiral-matrix-iii/" ADD_DATE="1663582039">Spiral Matrix - Starting Pt</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/rotate-matrix-elements-clockwise2336/1" ADD_DATE="1663582039">Shell Rotate Matrix</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/library/rotate-each-ring-of-matrix-clockwise-by-k-elements" ADD_DATE="1663582039">Shell Rotate Matrix</A>
</DL><p>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Big Integers as Arrays</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/plus-one/" ADD_DATE="1663582039">Plus One to Array</A>
<DT><A HREF="https://leetcode.com/problems/add-to-array-form-of-integer/" ADD_DATE="1663582039">Plus K to Array</A>
<DT><A HREF="https://leetcode.com/problems/add-strings/" ADD_DATE="1663582039">Add Two Strings</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/function-and-arrays/difference-of-two-arrays-official/ojquestion" ADD_DATE="1663582039">Subtract Two Arrays</A>
<DT><A HREF="https://www.geeksforgeeks.org/difference-of-two-large-numbers/" ADD_DATE="1663582039">Subtract Two Arrays</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/compare-two-large-numbers3413/1" ADD_DATE="1663582039">Compare Two Strings</A>
<DT><A HREF="https://leetcode.com/problems/multiply-strings/" ADD_DATE="1663582039">Multiply Two Strings</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/factorials-of-large-numbers2508/1" ADD_DATE="1663582039">Large Factorial</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/multiply-two-polynomals0721/1" ADD_DATE="1663582039">Multiply Polynomials</A>
<DT><A HREF="https://www.youtube.com/playlist?list=PL0x1zsLFiXsyDTxorwLPAdXYdUFRrrR55" ADD_DATE="1663582039">Sparse Matrix</A>
<DT><A HREF="https://www.javatpoint.com/sparse-matrix" ADD_DATE="1663582039">Sparse Matrix</A>
<DT><A HREF="https://www.geeksforgeeks.org/biginteger-class-in-java/" ADD_DATE="1663582039">Big Integers Java</A>
<DT><A HREF="https://www.youtube.com/watch?v=UD8rCe_QVOE&ab_channel=GauravSen" ADD_DATE="1663582039">Big Integers Java</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Majority Element</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/majority-element/" ADD_DATE="1663582039">Majority Element - I</A>
<DT><A HREF="https://leetcode.com/problems/majority-element-ii/" ADD_DATE="1663582039">Majority Element - II</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/count-element-occurences/1" ADD_DATE="1663582039">Majority Element - III</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Missing & Duplicate</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/missing-number/" ADD_DATE="1663582039">Missing Number - I</A>
<DT><A HREF="https://leetcode.com/problems/find-all-numbers-disappeared-in-an-array/" ADD_DATE="1663582039">Missing Number - II</A>
<DT><A HREF="https://leetcode.com/problems/first-missing-positive/" ADD_DATE="1663582039">First Missing Positive</A>
<DT><A HREF="https://leetcode.com/problems/find-the-duplicate-number/" ADD_DATE="1663582039">Repeating Element - I</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/find-duplicates-in-an-array/1" ADD_DATE="1663582039">Repeating Element - II</A>
<DT><A HREF="https://leetcode.com/problems/find-all-duplicates-in-an-array/" ADD_DATE="1663582039">Repeating Element - III</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/maximum-repeating-number4858/1" ADD_DATE="1663582039">Max Repeating Element</A>
<DT><A HREF="https://leetcode.com/problems/set-mismatch/" ADD_DATE="1663582039">Missing & Repeating</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">String Matching Problems</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/is-subsequence/" ADD_DATE="1663582039">Is Subsequence</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/find-largest-word-in-dictionary2430/1" ADD_DATE="1663582039">Largest Word in Dictionary</A>
<DT><A HREF="https://leetcode.com/problems/valid-anagram/" ADD_DATE="1663582039">Valid Anagram</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/check-if-two-strings-are-k-anagrams-or-not/1" ADD_DATE="1663582039">K Anagrams</A>
<DT><A HREF="https://leetcode.com/problems/find-all-anagrams-in-a-string/" ADD_DATE="1663582039">Anagram Substrings</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/anagram-mapping_3125901" ADD_DATE="1663582039">Anagram Mappings</A>
<DT><A HREF="https://leetcode.com/problems/group-anagrams/" ADD_DATE="1663582039">Group Anagrams</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/hashmap-and-heaps/group-shifted-string-official/ojquestion" ADD_DATE="1663582039">Group Shifted Strings</A>
<DT><A HREF="https://www.geeksforgeeks.org/group-shifted-string/" ADD_DATE="1663582039">Group Shifted Strings</A>
<DT><A HREF="https://leetcode.com/problems/find-and-replace-pattern/" ADD_DATE="1663582039">Find & Replace Pattern</A>
<DT><A HREF="https://leetcode.com/problems/groups-of-special-equivalent-strings/" ADD_DATE="1663582039">Odd - Even Anagrams</A>
<DT><A HREF="https://leetcode.com/problems/word-subsets/" ADD_DATE="1663582039">Word Subsets</A>
<DT><A HREF="https://leetcode.com/problems/isomorphic-strings/" ADD_DATE="1663582039">Isomorphic Strings - I</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/match-specific-pattern/1" ADD_DATE="1663582039">Isomorphic Strings - II</A>
<DT><A HREF="https://leetcode.com/problems/word-pattern/" ADD_DATE="1663582039">Word Pattern - I</A>
<DT><A HREF="https://www.geeksforgeeks.org/match-a-pattern-and-string-without-using-regular-expressions/" ADD_DATE="1663582039">Word Pattern - II</A>
<DT><A HREF="https://leetcode.com/problems/camelcase-matching/" ADD_DATE="1663582039">Camelcase Matching</A>
<DT><A HREF="https://leetcode.com/problems/first-unique-character-in-a-string/" ADD_DATE="1663582039">First Unique Character</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/remove-all-duplicates-from-a-given-string4321/1" ADD_DATE="1663582039">Remove Duplicate Chars</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/repeated-character2058/1" ADD_DATE="1663582039">First Repeated Character</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">More String Problems</H3>
<DL><p>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/run-length-encoding/1" ADD_DATE="1663582039">Run Length Encoding</A>
<DT><A HREF="https://leetcode.com/problems/string-compression/" ADD_DATE="1663582039">String Compression</A>
<DT><A HREF="https://leetcode.com/problems/compare-version-numbers/" ADD_DATE="1663582039">Compare Version Nos</A>
<DT><A HREF="https://leetcode.com/problems/zigzag-conversion/" ADD_DATE="1663582039">Zig Zag Conversion</A>
<DT><A HREF="https://leetcode.com/problems/validate-ip-address/" ADD_DATE="1663582039">Validate IP Address</A>
<DT><A HREF="https://leetcode.com/problems/maximum-swap/" ADD_DATE="1663582039">Maximum Number Swap</A>
<DT><A HREF="https://leetcode.com/problems/largest-odd-number-in-string/" ADD_DATE="1663582039">Largest Odd Substring</A>
<DT><A HREF="https://leetcode.com/problems/sum-of-beauty-of-all-substrings/" ADD_DATE="1663582039">Beauty of All Substrings</A>
<DT><A HREF="https://www.interviewbit.com/problems/pretty-json/" ADD_DATE="1663582039">Pretty JSON</A>
</DL><p>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Number Theory</H3>
<DL><p>
<DT><A HREF="https://www.youtube.com/playlist?list=PLTAWODwDBzMzW8E544TAqis9cOUSoioYq" ADD_DATE="1663582039">Number Theory</A>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Euclid's Algorithm</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/find-greatest-common-divisor-of-array/" ADD_DATE="1663582039">GCD of 2 Numbers</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/lcm-and-gcd4516/1" ADD_DATE="1663582039">Euclid's Algorithm</A>
<DT><A HREF="https://www.youtube.com/watch?v=utZcJ0leZ_g&ab_channel=Luv" ADD_DATE="1663582039">Euclid's Algorithm</A>
<DT><A HREF="https://cp-algorithms.com/algebra/euclid-algorithm.html" ADD_DATE="1663582039">Euclid's Algorithm</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/gcd-of-array0614/1" ADD_DATE="1663582039">GCD of Array</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/advanced-gcd_1082145" ADD_DATE="1663582039">GCD of Big Integer</A>
<DT><A HREF="https://www.geeksforgeeks.org/gcd-of-two-numbers-when-one-of-them-can-be-very-large-2/" ADD_DATE="1663582039">GCD of Big Integer</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/required-rooms3939/1" ADD_DATE="1663582039">Required Rooms</A>
<DT><A HREF="https://leetcode.com/problems/x-of-a-kind-in-a-deck-of-cards/" ADD_DATE="1663582039">Deck of Cards</A>
<DT><A HREF="https://leetcode.com/problems/simplified-fractions/" ADD_DATE="1663582039">Simplified Fractions</A>
<DT><A HREF="https://leetcode.com/problems/minimum-deletions-to-make-array-divisible/" ADD_DATE="1663582039">Min Deletions Array Divisible</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/cutting-rectangles3659/1" ADD_DATE="1663582039">Cutting Squares</A>
<DT><A HREF="https://www.interviewbit.com/problems/largest-coprime-divisor/" ADD_DATE="1663582039">Largest Coprime Divisor</A>
<DT><A HREF="https://www.geeksforgeeks.org/largest-number-divides-x-co-prime-y/" ADD_DATE="1663582039">Largest Coprime Divisor</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Extended Euclid</H3>
<DL><p>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/extended-euclidean-algorithm3848/1" ADD_DATE="1663582039">Extended Euclid Algorithm</A>
<DT><A HREF="https://cp-algorithms.com/algebra/extended-euclid-algorithm.html" ADD_DATE="1663582039">Extended Euclid Algorithm</A>
<DT><A HREF="https://www.youtube.com/watch?v=H4AuhS7pN48&ab_channel=Pepcoding" ADD_DATE="1663582039">Extended Euclid Algorithm</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/linear-diophantine-equations5649/1" ADD_DATE="1663582039">Linear Diophantine Eqn</A>
<DT><A HREF="https://cp-algorithms.com/algebra/linear-diophantine-equation.html" ADD_DATE="1663582039">Linear Diophantine Eqn</A>
<DT><A HREF="https://www.youtube.com/watch?v=hl3JWn1loiI&ab_channel=Pepcoding" ADD_DATE="1663582039">Linear Diophantine Eqn</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Prime Numbers</H3>
<DL><p>
<DT><A HREF="https://www.youtube.com/playlist?list=PLN4aKSfpk8TQDJz7KLiwGFgnoUUwzfl1i" ADD_DATE="1663582039">Prime Numbers Playlist</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/prime-number2314/1" ADD_DATE="1663582039">Checking No is Prime</A>
<DT><A HREF="https://leetcode.com/problems/the-kth-factor-of-n/" ADD_DATE="1663582039">Kth Factor of Number</A>
<DT><A HREF="https://leetcode.com/problems/three-divisors/" ADD_DATE="1663582039">Three Divisors</A>
<DT><A HREF="https://leetcode.com/problems/four-divisors/" ADD_DATE="1663582039">Four Divisors</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/number-of-factors1435/1" ADD_DATE="1663582039">Count Factors</A>
<DT><A HREF="https://www.geeksforgeeks.org/efficient-program-print-number-factors-n-numbers/" ADD_DATE="1663582039">Count Factors Queries</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/factors-sum2016/1" ADD_DATE="1663582039">Sum of Factors</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/product-of-factors-of-number4757/1" ADD_DATE="1663582039">Product of Factors</A>
<DT><A HREF="https://cp-algorithms.com/algebra/divisors.html" ADD_DATE="1663582039">Number & Sum of Factors</A>
<DT><A HREF="https://www.youtube.com/watch?v=uy_C8BkuN9w&ab_channel=Luv" ADD_DATE="1663582039">Number & Sum of Factors</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/common-divisors4712/1" ADD_DATE="1663582039">Count Common Divisors</A>
<DT><A HREF="https://www.youtube.com/watch?v=ALfvwFMjiJo&ab_channel=Pepcoding" ADD_DATE="1663582039">Count Common Divisors</A>
<DT><A HREF="https://leetcode.com/problems/count-primes/" ADD_DATE="1663582039">Count Prime Numbers</A>
<DT><A HREF="https://cp-algorithms.com/algebra/sieve-of-eratosthenes.html" ADD_DATE="1663582039">Sieve of Eratosthenes</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/find-nth-prime_920382" ADD_DATE="1663582039">Find Kth Prime</A>
<DT><A HREF="https://leetcode.com/problems/prime-arrangements/" ADD_DATE="1663582039">Prime Arrangements</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/least-prime-factor5216/1" ADD_DATE="1663582039">Smallest Prime Factor</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/largest-prime-factor_1062687" ADD_DATE="1663582039">Largest Prime Factor</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/count-primes-in-range1604/1" ADD_DATE="1663582039">Primes in Range I</A>
<DT><A HREF="https://www.geeksforgeeks.org/bitwise-sieve/" ADD_DATE="1663582039">Bitset Sieve</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/product-of-primes5328/1" ADD_DATE="1663582039">Product of Primes</A>
<DT><A HREF="https://www.spoj.com/problems/PRIME1/" ADD_DATE="1663582039">Primes in Range II</A>
<DT><A HREF="https://www.geeksforgeeks.org/segmented-sieve/" ADD_DATE="1663582039">Segmented Sieve</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/prime-factors5052/1" ADD_DATE="1663582039">Prime Factorization</A>
<DT><A HREF="https://leetcode.com/problems/perfect-number/" ADD_DATE="1663582039">Perfect Number</A>
<DT><A HREF="https://www.geeksforgeeks.org/prime-factorization-using-sieve-olog-n-multiple-queries/" ADD_DATE="1663582039">Prime Factorization Queries</A>
<DT><A HREF="https://www.geeksforgeeks.org/queries-print-divisors-number/" ADD_DATE="1663582039">Print Factors Queries</A>
<DT><A HREF="https://www.youtube.com/watch?v=4a_zLjG4kXU&ab_channel=Luv" ADD_DATE="1663582039">Sieve Variations</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Modular Arithmetic</H3>
<DL><p>
<DT><A HREF="https://www.youtube.com/watch?v=RCq5TYMZEwg&ab_channel=Luv" ADD_DATE="1663582039">Modular Arithmetic</A>
<DT><A HREF="https://www.geeksforgeeks.org/modulo-1097-1000000007/" ADD_DATE="1663582039">Modular Arithmeitc</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/large-factorial4721/1" ADD_DATE="1663582039">Modular Factorial</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/modular-exponentiation_1082146" ADD_DATE="1663582039">Modular Exponentiation</A>
<DT><A HREF="https://www.youtube.com/watch?v=J63JPxqmyzg&ab_channel=Luv" ADD_DATE="1663582039">Modular Exponentiation - I</A>
<DT><A HREF="https://www.youtube.com/watch?v=K8mJ27S72v0&ab_channel=Luv" ADD_DATE="1663582039">Modular Exponentiation - II</A>
<DT><A HREF="https://www.geeksforgeeks.org/fermats-little-theorem/" ADD_DATE="1663582039">Fermat's Little Theorem</A>
<DT><A HREF="https://www.youtube.com/watch?v=J4l71izDv74&ab_channel=Pepcoding" ADD_DATE="1663582039">Fermat's Little Theorem</A>
<DT><A HREF="https://www.geeksforgeeks.org/modular-division/" ADD_DATE="1663582039">Modular Division</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/modular-multiplicative-inverse-1587115620/1" ADD_DATE="1663582039">Modular Muliplicative Inverse</A>
<DT><A HREF="https://cp-algorithms.com/algebra/module-inverse.html" ADD_DATE="1663582039">Modular Muliplicative Inverse</A>
<DT><A HREF="https://www.youtube.com/watch?v=Gd9w8m-klho&ab_channel=Luv" ADD_DATE="1663582039">Modular Muliplicative Inverse</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/ncr-mod-m-part-10038/1" ADD_DATE="1663582039">Modular Binomial Coeff</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/permutationcoefficient_1214975" ADD_DATE="1663582039">Modular Permutation Coeff</A>
<DT><A HREF="https://www.youtube.com/watch?v=Ljo4tWiuZL0&ab_channel=Luv" ADD_DATE="1663582039">Modular Permutation Coeff</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/sum-of-subarrays2229/1" ADD_DATE="1663582039">Sum of All Subarrays</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/sum-of-all-sub-sequences-of-a-number3437/1" ADD_DATE="1663582039">Sum of All Subsets</A>
<DT><A HREF="https://leetcode.com/problems/sum-of-subsequence-widths/" ADD_DATE="1663582039">Sum of Subset Width</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Inclusion Exclusion Principle</H3>
<DL><p>
<DT><A HREF="https://cp-algorithms.com/combinatorics/inclusion-exclusion.html" ADD_DATE="1663582039">Inclusion Exclusion Principle</A>
<DT><A HREF="https://www.youtube.com/watch?v=ugnIxPYLXUk&ab_channel=Pepcoding" ADD_DATE="1663582039">Inclusion Exclusion Principle</A>
<DT><A HREF="https://leetcode.com/problems/nth-magical-number/" ADD_DATE="1663582039">Nth Magical Number</A>
<DT><A HREF="https://leetcode.com/problems/ugly-number-iii/" ADD_DATE="1663582039">Nth Ugly Number</A>
</DL><p>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Recursion & Backtracking</H3>
<DL><p>
<DT><A HREF="https://www.youtube.com/playlist?list=PLR5NJwv-15hnd0UZNrrviNaVbt34LgMBu" ADD_DATE="1663582039">Recursion & Backtracking</A>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Recursion Basics</H3>
<DL><p>
<DT><A HREF="https://www.scaler.com/topics/recursion-in-java/" ADD_DATE="1663582039">Recursion Theory</A>
<DT><A HREF="https://www.scaler.com/topics/data-structures/backtracking-algorithm/" ADD_DATE="1663582039">Backtracking Theory</A>
<DT><A HREF="https://pepcoding.com/resources/online-java-foundation/introduction-to-recursion/print-decreasing-official/ojquestion" ADD_DATE="1663582039">Print Decreasing</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/print-1-to-n-without-using-loops-1587115620/1" ADD_DATE="1663582039">Print Increasing</A>
<DT><A HREF="https://pepcoding.com/resources/online-java-foundation/introduction-to-recursion/print-increasing-decreasing-official/ojquestion" ADD_DATE="1663582039">Print Increasing Decreasing</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/factorial5739/1" ADD_DATE="1663582039">Factorial</A>
<DT><A HREF="https://pepcoding.com/resources/online-java-foundation/introduction-to-recursion/print-zig-zag-official/ojquestion" ADD_DATE="1663582039">Print ZigZag</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/tower-of-hanoi-1587115621/1" ADD_DATE="1663582039">Tower of Hanoi</A>
<DT><A HREF="https://leetcode.com/problems/powx-n/" ADD_DATE="1663582039">Exponentiation</A>
<DT><A HREF="https://cp-algorithms.com/algebra/binary-exp.html" ADD_DATE="1663582039">Binary Exponentiation</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/print-elements-of-array4910/1" ADD_DATE="1663582039">Print Array Left to Right</A>
<DT><A HREF="https://pepcoding.com/resources/online-java-foundation/recursion-in-arrays/display-array-in-reverse/ojquestion" ADD_DATE="1663582039">Print Array Right to Left</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/check-if-an-array-is-sorted0701/1" ADD_DATE="1663582039">Check Is Array Sorted</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/largest-element-in-array4009/0" ADD_DATE="1663582039">Largest Element in Array</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/find-index4752/1" ADD_DATE="1663582039">First & Last Occurence</A>
<DT><A HREF="https://pepcoding.com/resources/online-java-foundation/recursion-in-arrays/all-indices-official/ojquestion" ADD_DATE="1663582039">Find All Occurences</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Subsets Problems</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/subsets/" ADD_DATE="1663582039">Subsets</A>
<DT><A HREF="https://www.geeksforgeeks.org/subarraysubstring-vs-subsequence-and-programs-to-generate-them/" ADD_DATE="1663582039">Subarray vs Subset</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/function-and-arrays/subsets-of-array-official/ojquestion" ADD_DATE="1663582039">Iterative Method</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/recursion-with-arraylists/get-subsequence-official/ojquestion" ADD_DATE="1663582039">Get Subsets</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/recursion-on-the-way-up/print-subsequence-official/ojquestion" ADD_DATE="1663582039">Print Subsets</A>
<DT><A HREF="https://leetcode.com/problems/subsets-ii/" ADD_DATE="1663582039">Unique Subsets</A>
<DT><A HREF="https://www.geeksforgeeks.org/print-all-possible-combinations-of-r-elements-in-a-given-array-of-size-n/" ADD_DATE="1663582039">Subsets of Given Size</A>
<DT><A HREF="https://leetcode.com/problems/letter-tile-possibilities/" ADD_DATE="1663582039">Letter Tile Possibilites</A>
<DT><A HREF="https://leetcode.com/problems/matchsticks-to-square/" ADD_DATE="1663582039">Square Matchsticks</A>
<DT><A HREF="https://leetcode.com/problems/beautiful-arrangement/" ADD_DATE="1663582039">Beautiful Arrangement</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Maze Path Problems</H3>
<DL><p>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/recursion-on-the-way-up/print-stair-paths-official/ojquestion" ADD_DATE="1663582039">Print Stair Paths</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/recursion-with-arraylists/get-stair-paths-official/ojquestion" ADD_DATE="1663582039">Get Stair Paths</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/print-all-possible-paths-from-top-left-corner-to-bottom-right-corner-of-a-2-d-matrix_1171152" ADD_DATE="1663582039">All Maze Paths</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/rat-in-a-maze-problem/1" ADD_DATE="1663582039">Rat in Maze</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/recursion-backtracking/flood-fill-official/ojquestion" ADD_DATE="1663582039">Rat in Maze</A>
<DT><A HREF="https://leetcode.com/problems/unique-paths-iii/" ADD_DATE="1663582039">Count Rat in Maze Paths</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/rat-maze-with-multiple-jumps3852/1" ADD_DATE="1663582039">Rat in Maze with Jumps</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/recursion-with-arraylists/get-maze-path-with-jumps-official/ojquestion" ADD_DATE="1663582039">Get Maze Path with Jumps</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/recursion-on-the-way-up/print-maze-path-with-jumps-official/ojquestion" ADD_DATE="1663582039">Print Maze Path with Jumps</A>
<DT><A HREF="https://leetcode.com/problems/path-with-maximum-gold/" ADD_DATE="1663582039">Gold Mine Problem</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">P & C Problems</H3>
<DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Combinations</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/combinations/" ADD_DATE="1663582039">Combinations</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/combinations-i-official/ojquestion" ADD_DATE="1663582039">Combinations - 1</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/combinations-2-official/ojquestion" ADD_DATE="1663582039">Combinations - 2</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/factor-combinations_1232628" ADD_DATE="1663582039">Factor Combinations</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Permutations</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/permutations/" ADD_DATE="1663582039">Permutations</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/permutation-i-official/ojquestion" ADD_DATE="1663582039">Permutations - 1</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/permutations-ii-official/ojquestion" ADD_DATE="1663582039">Permutations - 2</A>
<DT><A HREF="https://www.geeksforgeeks.org/write-a-c-program-to-print-all-permutations-of-a-given-string/" ADD_DATE="1663582039">Permutations - 3</A>
<DT><A HREF="https://leetcode.com/problems/permutations-ii/" ADD_DATE="1663582039">Distinct Permutations</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/permutations-words-1-official/ojquestion" ADD_DATE="1663582039">Distinct Permutations - 1</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/permutations-words-2-official/ojquestion" ADD_DATE="1663582039">Distinct Permutations - 2</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/pallindrome-patterns0809/1" ADD_DATE="1663582039">Palindromic Permutations</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">K Words Combination</H3>
<DL><p>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/words-kselection-1-official/ojquestion" ADD_DATE="1663582039">K Words - Combination - I</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/word-kselection-2-official/ojquestion" ADD_DATE="1663582039">K Words - Combination - II</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/words-kselection-3-official/ojquestion" ADD_DATE="1663582039">K Words - Combination - III</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/words-kselection-4-official/ojquestion" ADD_DATE="1663582039">K Words - Combination - IV</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">K Words Permutation</H3>
<DL><p>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/words-klength-words-1-official/ojquestion" ADD_DATE="1663582039">K Words - Permutation - I</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/words-klength-words-2-official/ojquestion" ADD_DATE="1663582039">K Words - Permutation - II</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/wors-klength-words-3-official/ojquestion" ADD_DATE="1663582039">K Words - Permutation - III</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/words-klength-words-4-official/ojquestion" ADD_DATE="1663582039">K Words - Permutation - IV</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">2D Perm & Comb</H3>
<DL><p>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/queens-permutations-2das2d-queen-chooses-official/ojquestion" ADD_DATE="1663582039">Permutations - 2d as 2d - Box Choose</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/queens-combinations-2das2d-box-chooses-official/ojquestion" ADD_DATE="1663582039">Combinations - 2d as 2d - Box Choose</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/queens-permutations-2das2d-box-chooses-official/ojquestion" ADD_DATE="1663582039">Permutations - 2d as 2d - Queen Choose</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/queens-combinations-2das2d-official/ojquestion" ADD_DATE="1663582039">Combination - 2d as 2d - Box Choose</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/queens-combinations-2das1d-queen-chooses-official/ojquestion" ADD_DATE="1663582039">Combination - 2d as 1d - Queen Choose</A>
</DL><p>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Keypad Problems</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/letter-combinations-of-a-phone-number/" ADD_DATE="1663582039">Keypad Combinations</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/recursion-with-arraylists/get-kpc-official/ojquestion" ADD_DATE="1663582039">Get Keypad Combinations</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/recursion-on-the-way-up/print-kpc-official/ojquestion" ADD_DATE="1663582039">Print Keypad Combinations</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/recursion-on-the-way-up/print-encodings-official/ojquestion" ADD_DATE="1663582039">Print Decode Ways</A>
<DT><A HREF="https://www.geeksforgeeks.org/print-all-possible-decodings-of-a-given-digit-sequence/" ADD_DATE="1663582039">Print Decode Ways</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/generalized-abbreviation_1233144" ADD_DATE="1663582039">Generalized Abbreviations</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/abbreviation-suing-backtracking-official/ojquestion" ADD_DATE="1663582039">Abbreviations - Using R&B</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/bit-manipulation/abrreviation1-using-bits-official/ojquestion" ADD_DATE="1663582039">Abbreviations - Using Bits</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/convert-a-sentence-into-its-equivalent-mobile-numeric-keypad-sequence0547/1" ADD_DATE="1663582039">Keypad Sequence</A>
<DT><A HREF="https://leetcode.com/problems/letter-case-permutation/" ADD_DATE="1663582039">Letter Case Permutations</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">N Queen Problem</H3>
<DL><p>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/nqueens-combinations-2das1d-queen-chooses-official/ojquestion" ADD_DATE="1663582039">N Queen - Combinations</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/nqueens-permutations-2das1d-official-queen-chooses/ojquestion" ADD_DATE="1663582039">N Queen - Permutations</A>
<DT><A HREF="https://leetcode.com/problems/n-queens/" ADD_DATE="1663582039">N Queens - I</A>
<DT><A HREF="https://leetcode.com/problems/n-queens-ii/" ADD_DATE="1663582039">N Queens - II</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/recursion-backtracking/n-queens-official/ojquestion" ADD_DATE="1663582039">N Queen - Backtracking</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/nqueens-branch-and-bound-official/ojquestion" ADD_DATE="1663582039">N Queen - Branch & Bound</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/bit-manipulation/nqueens-using-bits-official/ojquestion" ADD_DATE="1663582039">N Queen - Bit Manipulation</A>
<DT><A HREF="https://www.codechef.com/problems/KNIGHTS" ADD_DATE="1663582039">N Knights </A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/nknights-combinations-2das1d-knight-chooses-official/ojquestion" ADD_DATE="1663582039">N Knights</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/knight-tour_1170518" ADD_DATE="1663582039">Knight's Tour Problem</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Coin Change Problem</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/combination-sum-ii/" ADD_DATE="1663582039">Coin Change - Combination - 1</A>
<DT><A HREF="https://leetcode.com/problems/combination-sum/" ADD_DATE="1663582039">Coin Change - Combination - 2</A>
<DT><A HREF="https://leetcode.com/problems/combination-sum-iii/" ADD_DATE="1663582039">Coin Change - Combination - 3</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/coin-change-permutations-1-official/ojquestion" ADD_DATE="1663582039">Coin Change - Permutation - 1</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/coin-change-permutations-2-official/ojquestion" ADD_DATE="1663582039">Coin Change - Permutation - 2</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Puzzles Problems</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/find-the-winner-of-the-circular-game/" ADD_DATE="1663582039">Josephus Problem</A>
<DT><A HREF="https://leetcode.com/problems/word-search/" ADD_DATE="1663582039">Word Search</A>
<DT><A HREF="https://leetcode.com/problems/check-if-word-can-be-placed-in-crossword/" ADD_DATE="1663582039">Crossword Puzzle - I</A>
<DT><A HREF="https://www.hackerrank.com/challenges/crossword-puzzle/problem" ADD_DATE="1663582039">Crossword Puzzle - II</A>
<DT><A HREF="https://leetcode.com/problems/valid-sudoku/" ADD_DATE="1663582039">Valid Sudoku</A>
<DT><A HREF="https://leetcode.com/problems/sudoku-solver/" ADD_DATE="1663582039">Sudoku Solver</A>
<DT><A HREF="https://www.geeksforgeeks.org/sudoku-backtracking-7/" ADD_DATE="1663582039">Sudoku Solver</A>
<DT><A HREF="https://leetcode.com/problems/verbal-arithmetic-puzzle/" ADD_DATE="1663582039">Verbal Arithmetic Puzzle</A>
<DT><A HREF="https://www.geeksforgeeks.org/magnet-puzzle-backtracking-9/" ADD_DATE="1663582039">Magnet Puzzle</A>
<DT><A HREF="https://leetcode.com/problems/construct-smallest-number-from-di-string/" ADD_DATE="1663582039">Smallest No in DI Pattern</A>
<DT><A HREF="https://leetcode.com/problems/maximum-score-words-formed-by-letters/" ADD_DATE="1663582039">Max Score Words</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">More Recursion Problems</H3>
<DL><p>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/largest-number-in-k-swaps-1587115620/1" ADD_DATE="1663582039">Largest No in K Swaps</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/recursion-and-backtracking/friends-pairing-2-official/ojquestion" ADD_DATE="1663582039">Print Friend Pairings</A>
<DT><A HREF="https://www.interviewbit.com/problems/stepping-numbers/" ADD_DATE="1663582039">Stepping Numbers</A>
<DT><A HREF="https://leetcode.com/problems/generate-parentheses/" ADD_DATE="1663582039">Generate Balanced Parenthesis</A>
<DT><A HREF="https://leetcode.com/problems/lexicographical-numbers/" ADD_DATE="1663582039">Lexicographical Numbers</A>
<DT><A HREF="https://leetcode.com/problems/restore-ip-addresses/" ADD_DATE="1663582039">Restore IP Addresses</A>
<DT><A HREF="https://leetcode.com/problems/count-and-say/" ADD_DATE="1663582039">Count & Say</A>
<DT><A HREF="https://leetcode.com/problems/integer-to-roman/" ADD_DATE="1663582039">Convert Integer to Roman</A>
<DT><A HREF="https://leetcode.com/problems/roman-to-integer/" ADD_DATE="1663582039">Convert Roman to Integer</A>
<DT><A HREF="https://leetcode.com/problems/integer-to-english-words/" ADD_DATE="1663582039">Integer in English Words</A>
<DT><A HREF="https://leetcode.com/problems/expression-add-operators/" ADD_DATE="1663582039">Expression Add Operators</A>
<DT><A HREF="https://leetcode.com/problems/additive-number/" ADD_DATE="1663582039">Additive Numbers</A>
<DT><A HREF="https://leetcode.com/problems/split-array-into-fibonacci-sequence/" ADD_DATE="1663582039">Split into Fibonacci Sequence</A>
<DT><A HREF="https://leetcode.com/problems/different-ways-to-add-parentheses/" ADD_DATE="1663582039">Paranthesis Addition Ways</A>
<DT><A HREF="https://leetcode.com/problems/k-th-symbol-in-grammar/" ADD_DATE="1663582039">Kth Symbol in Grammar</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/lucky-numbers2911/1" ADD_DATE="1663582039">Lucky Number </A>
</DL><p>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Sorting Algorithms</H3>
<DL><p>
<DT><A HREF="https://www.programiz.com/dsa/sorting-algorithm" ADD_DATE="1663582039">Sorting Algo Theory - I</A>
<DT><A HREF="https://www.scaler.com/topics/data-structures/sorting-algorithms/" ADD_DATE="1663582039">Sorting Algo Theory - II</A>
<DT><A HREF="https://www.youtube.com/playlist?list=PLTAWODwDBzMzeZVIUCkKII-3IygEbgiZE" ADD_DATE="1663582039">Searching & Sorting - L1</A>
<DT><A HREF="https://www.youtube.com/playlist?list=PLR5NJwv-15hmEy1qkncz7p_qLPH8WWYdy" ADD_DATE="1663582039">Searching & Sorting - L2</A>
<DT><A HREF="https://leetcode.com/problems/sort-an-array/" ADD_DATE="1663582039">Sort Array</A>
<DT><A HREF="https://www.geeksforgeeks.org/know-sorting-algorithm-set-1-sorting-weapons-used-programming-languages/" ADD_DATE="1663582039">Inbuilt Sorting</A>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Basic Sorting Algorithms</H3>
<DL><p>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/bubble-sort/1" ADD_DATE="1663582039">Bubble Sort</A>
<DT><A HREF="https://www.programiz.com/dsa/bubble-sort" ADD_DATE="1663582039">Bubble Sort</A>
<DT><A HREF="https://www.geeksforgeeks.org/recursive-bubble-sort/" ADD_DATE="1663582039">Bubble Sort - Recursive</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/punish-the-students5726/1" ADD_DATE="1663582039">Bubble Sort - Count Swaps</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/insertion-sort/1" ADD_DATE="1663582039">Insertion Sort</A>
<DT><A HREF="https://www.programiz.com/dsa/insertion-sort" ADD_DATE="1663582039">Insertion Sort</A>
<DT><A HREF="https://www.geeksforgeeks.org/recursive-insertion-sort/" ADD_DATE="1663582039">Insertion Sort - Recursive</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/selection-sort/1" ADD_DATE="1663582039">Selection Sort</A>
<DT><A HREF="https://www.programiz.com/dsa/selection-sort" ADD_DATE="1663582039">Selection Sort</A>
<DT><A HREF="https://www.geeksforgeeks.org/recursive-selection-sort/" ADD_DATE="1663582039">Selection Sort - Recursive</A>
<DT><A HREF="https://www.programiz.com/dsa/shell-sort" ADD_DATE="1663582039">Shell Sort</A>
<DT><A HREF="https://www.youtube.com/watch?v=9crZRd8GPWM&ab_channel=Jenny%27slecturesCS%2FITNET%26JRF" ADD_DATE="1663582039">Shell Sort</A>
<DT><A HREF="https://leetcode.com/problems/pancake-sorting/" ADD_DATE="1663582039">Pancake Sorting</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Merge Sorted Arrays</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/merge-sorted-array/" ADD_DATE="1663582039">Merge Two Sorted Arrays - I</A>
<DT><A HREF="https://www.geeksforgeeks.org/merge-two-sorted-arrays/" ADD_DATE="1663582039">Merging Using Two Pointers</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/merge-two-sorted-arrays-1587115620/1" ADD_DATE="1663582039">Merge Two Sorted Arrays - II</A>
<DT><A HREF="https://www.geeksforgeeks.org/merge-two-sorted-arrays-o1-extra-space/" ADD_DATE="1663582039">Merging using Insertion Sort</A>
<DT><A HREF="https://www.geeksforgeeks.org/efficiently-merging-two-sorted-arrays-with-o1-extra-space/" ADD_DATE="1663582039">Merging using Shell Sort</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/union-of-two-sorted-arrays-1587115621/1" ADD_DATE="1663582039">Union of 2 Sorted Arrays</A>
<DT><A HREF="https://leetcode.com/problems/intersection-of-two-arrays/" ADD_DATE="1663582039">Intersection of 2 Arrays - I</A>
<DT><A HREF="https://leetcode.com/problems/intersection-of-two-arrays-ii/" ADD_DATE="1663582039">Intersection of 2 Arrays - II</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/common-elements1132/1" ADD_DATE="1663582039">Instersection of 3 Arrays</A>
<DT><A HREF="https://leetcode.com/problems/find-the-difference-of-two-arrays/" ADD_DATE="1663582039">Symmetric Difference</A>
<DT><A HREF="https://leetcode.com/problems/squares-of-a-sorted-array/" ADD_DATE="1663582039">Squares of Sorted Array</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Partitioning Algorithm</H3>
<DL><p>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/time-and-space-complexity/partition-an-array-official/ojquestion" ADD_DATE="1663582039">Partition Around Pivot</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/binary-array-sorting-1587115620/1" ADD_DATE="1663582039">Sort Binary Array</A>
<DT><A HREF="https://leetcode.com/problems/sort-colors/" ADD_DATE="1663582039">Sort Colors 012</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/three-way-partitioning/1" ADD_DATE="1663582039">Dual Pivot Partitioning</A>
<DT><A HREF="https://leetcode.com/problems/partition-array-according-to-given-pivot/" ADD_DATE="1663582039">Three Way Partitioning</A>
<DT><A HREF="https://leetcode.com/problems/move-zeroes/" ADD_DATE="1663582039">Move Zeroes To End</A>
<DT><A HREF="https://leetcode.com/problems/sort-array-by-parity/" ADD_DATE="1663582039">Segregate w/o Relative Order</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/move-all-negative-elements-to-end1813/1" ADD_DATE="1663582039">Segregate with Relative Order</A>
<DT><A HREF="https://github.com/archit-aggarwal/Pepcoding-DSA/blob/main/04.%20Searching%20%26%20Sorting/Move%20All%20Negatives%20to%20End.java" ADD_DATE="1663582039">Segregate with Relative Order</A>
<DT><A HREF="https://leetcode.com/problems/sort-array-by-parity-ii/" ADD_DATE="1663582039">Alternate w/o Relative Order</A>
<DT><A HREF="https://leetcode.com/problems/rearrange-array-elements-by-sign/" ADD_DATE="1663582039">Alternate with Relative Order</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Rearrange Array</H3>
<DL><p>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/wiggle-sort_3155169" ADD_DATE="1663582039">Wiggle Sort - 1</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/convert-array-into-zig-zag-fashion1638/1" ADD_DATE="1663582039">Wiggle Sort - 1</A>
<DT><A HREF="https://leetcode.com/problems/wiggle-sort-ii/" ADD_DATE="1663582039">Wiggle Sort - 2</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/wave-array-1587115621/1" ADD_DATE="1663582039">Wave Sort - Lexical Order</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/-rearrange-array-alternately-1587115620/1" ADD_DATE="1663582039">Wave Sort - Min Max Form</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/rearrange-an-array-with-o1-extra-space3142/1" ADD_DATE="1663582039">Inverse Permutation - I</A>
<DT><A HREF="https://www.geeksforgeeks.org/rearrange-array-arrj-becomes-arri-j/" ADD_DATE="1663582039">Inverse Permutation - II</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/inverse-permutation0344/0" ADD_DATE="1663582039">Reorder Array with Indexes</A>
<DT><A HREF="https://www.geeksforgeeks.org/reorder-a-array-according-to-given-indexes/" ADD_DATE="1663582039">Reorder Array with Indexes</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Divide & Conquer Based</H3>
<DL><p>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/merge-sort/1" ADD_DATE="1663582039">Merge Sort</A>
<DT><A HREF="https://www.programiz.com/dsa/merge-sort" ADD_DATE="1663582039">Merge Sort</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/quick-sort/1" ADD_DATE="1663582039">Quick Sort</A>
<DT><A HREF="https://www.programiz.com/dsa/quick-sort" ADD_DATE="1663582039">Quick Sort</A>
<DT><A HREF="https://www.geeksforgeeks.org/dual-pivot-quicksort/" ADD_DATE="1663582039">Dual Pivot Quicksort</A>
<DT><A HREF="https://www.geeksforgeeks.org/3-way-quicksort-dutch-national-flag/" ADD_DATE="1663582039">3 Way Quick Sort</A>
<DT><A HREF="https://www.geeksforgeeks.org/improvement-on-the-quick-sort-algorithm/" ADD_DATE="1663582039">Improving Quicksort</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Counting Sort</H3>
<DL><p>
<DT><A HREF="https://www.programiz.com/dsa/counting-sort" ADD_DATE="1663582039">Counting Sort</A>
<DT><A HREF="https://www.programiz.com/dsa/radix-sort" ADD_DATE="1663582039">Radix Sort</A>
<DT><A HREF="https://www.programiz.com/dsa/bucket-sort" ADD_DATE="1663582039">Bucket Sort</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/sort-big-list-dates_1806890" ADD_DATE="1663582039">Sort Array of Dates</A>
<DT><A HREF="https://leetcode.com/problems/minimum-time-difference/" ADD_DATE="1663582039">Minimum Time Distance</A>
<DT><A HREF="https://leetcode.com/problems/h-index/" ADD_DATE="1663582039">H Index Unsorted</A>
<DT><A HREF="https://leetcode.com/problems/height-checker/" ADD_DATE="1663582039">Height Checker</A>
<DT><A HREF="https://leetcode.com/problems/relative-sort-array/" ADD_DATE="1663582039">Relative Sort Array</A>
<DT><A HREF="https://leetcode.com/problems/maximum-gap/" ADD_DATE="1663582039">Max Consecutive Gap</A>
<DT><A HREF="https://leetcode.com/problems/sort-array-by-increasing-frequency/" ADD_DATE="1663582039">Frequency Sort</A>
<DT><A HREF="https://leetcode.com/problems/sort-characters-by-frequency/" ADD_DATE="1663582039">Frequency Sort String</A>
<DT><A HREF="https://leetcode.com/problems/top-k-frequent-elements/" ADD_DATE="1663582039">Top K Frequent Elements</A>
<DT><A HREF="https://leetcode.com/problems/top-k-frequent-words/" ADD_DATE="1663582039">Top K Frequent Words</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/top-k-numbers3425/1" ADD_DATE="1663582039">Top K Frequent in Stream</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Inversion Count</H3>
<DL><p>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/inversion-of-array-1587115620/1" ADD_DATE="1663582039">Inversion Count</A>
<DT><A HREF="https://www.geeksforgeeks.org/counting-inversions/" ADD_DATE="1663582039">Inversions - Merge Sort</A>
<DT><A HREF="https://www.geeksforgeeks.org/inversion-count-using-policy-based-data-structure/" ADD_DATE="1663582039">Inversions - Policy Based DS</A>
<DT><A HREF="https://www.youtube.com/playlist?list=PLTAWODwDBzMwQ3d4CC0GABSIu9s_ch4hI" ADD_DATE="1663582039">Policy Based DS</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/minimum-number-of-swaps-needed2136/1" ADD_DATE="1663582039">Min Adjacent Swaps to Sort</A>
<DT><A HREF="https://leetcode.com/problems/global-and-local-inversions/" ADD_DATE="1663582039">Global & Local Inversions</A>
<DT><A HREF="https://leetcode.com/problems/reverse-pairs/" ADD_DATE="1663582039">Reverse Pairs</A>
<DT><A HREF="https://leetcode.com/problems/count-of-smaller-numbers-after-self/" ADD_DATE="1663582039">Count of Smaller After Self</A>
<DT><A HREF="https://leetcode.com/problems/count-of-range-sum/" ADD_DATE="1663582039">Count of Range Sum</A>
<DT><A HREF="https://www.geeksforgeeks.org/count-of-substrings-in-a-binary-string-that-contains-more-1s-than-0s/" ADD_DATE="1663582039">Count Binary Substrings</A>
</DL><p>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Binary Search</H3>
<DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Binary Search Basics</H3>
<DL><p>
<DT><A HREF="https://www.scaler.com/topics/data-structures/binary-search-algorithm/" ADD_DATE="1663582039">Binary Search Theory</A>
<DT><A HREF="https://leetcode.com/problems/binary-search/" ADD_DATE="1663582039">Binary Search</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/find-transition-point-1587115620/1" ADD_DATE="1663582039">Transition Point</A>
<DT><A HREF="https://leetcode.com/problems/first-bad-version/" ADD_DATE="1663582039">First Bad Version</A>
<DT><A HREF="https://leetcode.com/problems/guess-number-higher-or-lower/" ADD_DATE="1663582039">Guess No Higher or Lower</A>
<DT><A HREF="https://leetcode.com/problems/arranging-coins/" ADD_DATE="1663582039">Arranging Coins</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/fixed-point_1264949" ADD_DATE="1663582039">Fixed Point in Sorted Array</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Lower & Upper Bound</H3>
<DL><p>
<DT><A HREF="https://www.geeksforgeeks.org/implementing-upper_bound-and-lower_bound-in-c/" ADD_DATE="1663582039">Lower & Upper Bound</A>
<DT><A HREF="https://leetcode.com/problems/search-insert-position/" ADD_DATE="1663582039">Search Insert Position</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/ceiling-in-a-sorted-array_1825401" ADD_DATE="1663582039">Ceil in Sorted Array</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/floor-in-a-sorted-array-1587115620/0" ADD_DATE="1663582039">Floor in Sorted Array</A>
<DT><A HREF="https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array/" ADD_DATE="1663582039">First & Last Occurence</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/number-of-occurrence2259/1" ADD_DATE="1663582039">Count Occurences</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/find-the-closest-number5513/1" ADD_DATE="1663582039">Closest Element</A>
<DT><A HREF="https://leetcode.com/problems/find-k-closest-elements/" ADD_DATE="1663582039">K Closest Elements</A>
<DT><A HREF="https://leetcode.com/problems/heaters/" ADD_DATE="1663582039">Heaters</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/remove-minimum-elements4612/1" ADD_DATE="1663582039">Remove 2*Min >= Max</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Root & Square</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/sqrtx/" ADD_DATE="1663582039">Square Root - Integral</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/square-root-decimal_1095655" ADD_DATE="1663582039">Square Root - Decimal</A>
<DT><A HREF="https://github.com/archit-aggarwal/C-Cpp-Codes/blob/master/Square%20Root%20Using%20Binary%20Search.cpp" ADD_DATE="1663582039">Square Root</A>
<DT><A HREF="https://leetcode.com/problems/valid-perfect-square/" ADD_DATE="1663582039">Valid Perfect Square</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/find-nth-root-of-m5843/1" ADD_DATE="1663582039">Nth Root of Number</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Rotated Sorted Array</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/" ADD_DATE="1663582039">Pivot in Rotated Sorted - I</A>
<DT><A HREF="https://leetcode.com/problems/find-minimum-in-rotated-sorted-array-ii/" ADD_DATE="1663582039">Pivot in Rotated Sorted - II</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/rotation4723/1" ADD_DATE="1663582039">Rotation Count in Rotated Sorted</A>
<DT><A HREF="https://leetcode.com/problems/search-in-rotated-sorted-array/" ADD_DATE="1663582039">Search in Rotated Sorted - I</A>
<DT><A HREF="https://leetcode.com/problems/search-in-rotated-sorted-array-ii/" ADD_DATE="1663582039">Search in Rotated Sorted - II</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/leetcode/search-in-nearly-sorted-array/ojquestion" ADD_DATE="1663582039">Search in Nearly Sorted</A>
<DT><A HREF="https://www.geeksforgeeks.org/search-almost-sorted-array/" ADD_DATE="1663582039">Search in Nearly Sorted</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Mountain Array</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/peak-index-in-a-mountain-array/" ADD_DATE="1663582039">Peak in Bitonic Array</A>
<DT><A HREF="https://www.interviewbit.com/problems/search-in-bitonic-array/" ADD_DATE="1663582039">Search in Bitonic Array</A>
<DT><A HREF="https://leetcode.com/problems/find-peak-element/" ADD_DATE="1663582039">Find Peak Element</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Search in 2D Matrix</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/search-a-2d-matrix/" ADD_DATE="1663582039">Search 2D Matrix - I</A>
<DT><A HREF="https://leetcode.com/problems/search-a-2d-matrix-ii/" ADD_DATE="1663582039">Search 2D Matrix - II</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/count-zeros-in-a-sorted-matrix/1" ADD_DATE="1663582039">Count 0 in Binary Matrix</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/row-with-max-1s0023/1" ADD_DATE="1663582039">Max 1s Row in Binary Matrix</A>
<DT><A HREF="https://leetcode.com/problems/find-a-peak-element-ii/" ADD_DATE="1663582039">Peak Element in Matrix</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Median in 2 Arrays</H3>
<DL><p>
<DT><A HREF="https://www.geeksforgeeks.org/median-of-two-sorted-arrays/" ADD_DATE="1663582039">Median 2 Sorted Arrays - Same Size</A>
<DT><A HREF="https://leetcode.com/problems/median-of-two-sorted-arrays/" ADD_DATE="1663582039">Median 2 Sorted Arrays - Dff Size</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/k-th-element-of-two-sorted-array1317/1" ADD_DATE="1663582039">Kth Element in 2 Sorted Arrays</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/median-in-a-row-wise-sorted-matrix1527/1" ADD_DATE="1663582039">Median in Row Wise Sorted Matrix</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Binary Search on Answer</H3>
<DL><p>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/allocate-minimum-number-of-pages0937/1" ADD_DATE="1663582039">Book Allocation</A>
<DT><A HREF="https://www.interviewbit.com/problems/painters-partition-problem/" ADD_DATE="1663582039">Painter's Partition</A>
<DT><A HREF="https://leetcode.com/problems/split-array-largest-sum/" ADD_DATE="1663582039">Split Array Largest Sum</A>
<DT><A HREF="https://leetcode.com/problems/capacity-to-ship-packages-within-d-days/" ADD_DATE="1663582039">Capacity to Ship Packages</A>
<DT><A HREF="https://leetcode.com/problems/minimum-number-of-days-to-make-m-bouquets/" ADD_DATE="1663582039">Min Days to Make Bouquets</A>
<DT><A HREF="https://leetcode.com/problems/koko-eating-bananas/" ADD_DATE="1663582039">Koko Eating Banana</A>
<DT><A HREF="https://leetcode.com/problems/find-the-smallest-divisor-given-a-threshold/" ADD_DATE="1663582039">Smallest Divisor Threshold</A>
<DT><A HREF="https://leetcode.com/problems/minimum-time-to-complete-trips/" ADD_DATE="1663582039">Min Time to Complete Trips</A>
<DT><A HREF="https://leetcode.com/problems/minimum-speed-to-arrive-on-time/" ADD_DATE="1663582039">Min Speed to Arrive on Time</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/aggressive-cows_1082559" ADD_DATE="1663582039">Aggressive Cows</A>
<DT><A HREF="https://leetcode.com/problems/magnetic-force-between-two-balls/" ADD_DATE="1663582039">Magnetic Force Balls</A>
<DT><A HREF="https://leetcode.com/problems/maximum-candies-allocated-to-k-children/" ADD_DATE="1663582039">Max Candies to Children</A>
<DT><A HREF="https://www.interviewbit.com/problems/woodcutting-made-easy/" ADD_DATE="1663582039">Woodcutting Eko - SPOJ</A>
<DT><A HREF="https://leetcode.com/problems/minimized-maximum-of-products-distributed-to-any-store/" ADD_DATE="1663582039">Minimize Max Products Store</A>
<DT><A HREF="https://www.lintcode.com/problem/848/" ADD_DATE="1663582039">Minimize Farthest Gas Stations</A>
<DT><A HREF="https://www.spoj.com/problems/PRATA/" ADD_DATE="1663582039">Roti Prata - SPOJ</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">More Binary Search Problems</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/single-element-in-a-sorted-array/" ADD_DATE="1663582039">Single Element in Sorted</A>
<DT><A HREF="https://leetcode.com/problems/kth-missing-positive-number/" ADD_DATE="1663582039">Kth Missing Element</A>
<DT><A HREF="https://leetcode.com/problems/h-index-ii/" ADD_DATE="1663582039">H Index - Sorted</A>
<DT><A HREF="https://leetcode.com/problems/longest-subsequence-with-limited-sum/" ADD_DATE="1663582039">Longest Subset Limited Sum</A>
<DT><A HREF="https://leetcode.com/problems/find-k-th-smallest-pair-distance/" ADD_DATE="1663582039">Kth Smallest Pair Distance</A>
<DT><A HREF="https://leetcode.com/problems/random-pick-with-weight/" ADD_DATE="1663582039">Random Pick with Weight</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/missing-element-of-ap2228/1" ADD_DATE="1663582039">Missing Element of AP</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/smallest-factorial-number5929/1" ADD_DATE="1663582039">Min Factorial Trailing 0s</A>
<DT><A HREF="https://leetcode.com/problems/preimage-size-of-factorial-zeroes-function/" ADD_DATE="1663582039">Count Factorials with k 0s</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/left-out-candies/0" ADD_DATE="1663582039">Left Out Candies</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/coin-piles5152/1/" ADD_DATE="1663582039">Min Coin Piles</A>
<DT><A HREF="https://www.geeksforgeeks.org/longest-subarray-with-sum-greater-than-equal-to-zero/" ADD_DATE="1663582039">Longest Subarray Sum > 0</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/max-sum-path-in-two-arrays/1" ADD_DATE="1663582039">Double Helix - SPOJ</A>
</DL><p>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Linked List</H3>
<DL><p>
<DT><A HREF="https://www.youtube.com/playlist?list=PLR5NJwv-15hkcxr9U6wa5Ya4I-U30DEJP" ADD_DATE="1663582039">Linked List</A>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Design Linked List</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/design-linked-list/" ADD_DATE="1663582039">Design Linked List</A>
<DT><A HREF="https://www.scaler.com/topics/data-structures/singly-linked-list/" ADD_DATE="1663582039">Singly Linked List Theory</A>
<DT><A HREF="https://www.scaler.com/topics/data-structures/doubly-linked-list/" ADD_DATE="1663582039">Doubly Linked List Theory</A>
<DT><A HREF="https://www.scaler.com/topics/data-structures/circular-linked-list/" ADD_DATE="1663582039">Circular Linked List Theory</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/search-in-a-linked-list_975381" ADD_DATE="1663582039">Searching - SLL</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/print-linked-list-elements/1" ADD_DATE="1663582039">Traversal - SLL</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Remove List Nodes</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/remove-linked-list-elements/" ADD_DATE="1663582039">Remove All Occurences</A>
<DT><A HREF="https://leetcode.com/problems/remove-duplicates-from-sorted-list/" ADD_DATE="1663582039">Remove Duplicates in Sorted List - I</A>
<DT><A HREF="https://leetcode.com/problems/remove-duplicates-from-sorted-list-ii/" ADD_DATE="1663582039">Remove Duplicates in Sorted List - II</A>
<DT><A HREF="https://leetcode.com/problems/delete-node-in-a-linked-list/" ADD_DATE="1663582039">Delete Node Without Head</A>
<DT><A HREF="https://leetcode.com/problems/remove-zero-sum-consecutive-nodes-from-linked-list/" ADD_DATE="1663582039">Remove 0 Sum Nodes</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Two Pointers in List</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/middle-of-the-linked-list/" ADD_DATE="1663582039">Get Middle Node of List</A>
<DT><A HREF="https://leetcode.com/problems/delete-the-middle-node-of-a-linked-list/" ADD_DATE="1663582039">Delete Middle Node of List</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/nth-node-from-end-of-linked-list/1" ADD_DATE="1663582039">Get Kth Node from End</A>
<DT><A HREF="https://leetcode.com/problems/remove-nth-node-from-end-of-list/" ADD_DATE="1663582039">Delete Kth Node from End</A>
<DT><A HREF="https://leetcode.com/problems/swapping-nodes-in-a-linked-list/" ADD_DATE="1663582039">Swap Kth List Nodes</A>
<DT><A HREF="https://leetcode.com/problems/intersection-of-two-linked-lists/" ADD_DATE="1663582039">Intersection Node of 2 Lists</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/intersection-of-two-linked-list/1" ADD_DATE="1663582039">Common Nodes in 2 Lists</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/intersection-of-two-sorted-linked-lists/1" ADD_DATE="1663582039">Common Nodes in 2 Sorted Lists</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/union-of-two-linked-list/1" ADD_DATE="1663582039">Merge 2 Unsorted Lists</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Floyd's Cycle Detection</H3>
<DL><p>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/circular-linked-list/1" ADD_DATE="1663582039">Check Circular List</A>
<DT><A HREF="https://leetcode.com/problems/linked-list-cycle/" ADD_DATE="1663582039">Linked List Cycle Detection</A>
<DT><A HREF="https://leetcode.com/problems/linked-list-cycle-ii/" ADD_DATE="1663582039">Starting List Node in Cycle</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/find-length-of-loop/1" ADD_DATE="1663582039">Length of Linked List Cycle</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/remove-loop-in-linked-list/1" ADD_DATE="1663582039">Remove Cycle from List</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Reverse Linked List</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/reverse-linked-list/" ADD_DATE="1663582039">Reverse Singly Linked List</A>
<DT><A HREF="https://leetcode.com/problems/reverse-linked-list-ii/" ADD_DATE="1663582039">Reverse SLL in Range</A>
<DT><A HREF="https://leetcode.com/problems/reverse-nodes-in-k-group/" ADD_DATE="1663582039">Reverse SLL in K Groups</A>
<DT><A HREF="https://leetcode.com/problems/swap-nodes-in-pairs/" ADD_DATE="1663582039">Swap List Nodes in Pairs</A>
<DT><A HREF="https://www.interviewbit.com/problems/even-reverse/" ADD_DATE="1663582039">Reverse Even List Nodes</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/reverse-a-doubly-linked-list/1" ADD_DATE="1663582039">Reverse Doubly Linked List</A>
<DT><A HREF="https://leetcode.com/problems/palindrome-linked-list/" ADD_DATE="1663582039">Palindrome Linked List</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Merge Sort List</H3>
<DL><p>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/merge-two-sorted-linked-lists/1" ADD_DATE="1663582039">Merge 2 Sorted Lists</A>
<DT><A HREF="https://leetcode.com/problems/merge-k-sorted-lists/" ADD_DATE="1663582039">Merge K Sorted Lists</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/flattening-a-linked-list/1" ADD_DATE="1663582039">Flatten Sorted Lists</A>
<DT><A HREF="https://leetcode.com/problems/sort-list/" ADD_DATE="1663582039">Sort Singly Linked List</A>
<DT><A HREF="https://www.geeksforgeeks.org/merge-sort-for-linked-list/" ADD_DATE="1663582039">Merge Sort - SLL</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/merge-sort-on-doubly-linked-list/1" ADD_DATE="1663582039">Merge Sort - DLL</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Quick Sort List</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/partition-list/" ADD_DATE="1663582039">Partition Linked List</A>
<DT><A HREF="https://www.interviewbit.com/problems/sort-binary-linked-list/" ADD_DATE="1663582039">Sort Binary Linked List</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/segregate-even-and-odd-nodes-in-a-linked-list5035/1" ADD_DATE="1663582039">Segregate Odd & Even Nodes</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/given-a-linked-list-of-0s-1s-and-2s-sort-it/1" ADD_DATE="1663582039">Sort Colors in Linked List</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/quick-sort-on-linked-list/1" ADD_DATE="1663582039">QuickSort - SLL</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/quicksort-on-doubly-linked-list/1" ADD_DATE="1663582039">Quick Sort - DLL</A>
<DT><A HREF="https://www.interviewkickstart.com/learn/quicksort-vs-merge-sort" ADD_DATE="1663582039">Quicksort vs Mergesort</A>
<DT><A HREF="https://www.geeksforgeeks.org/why-quick-sort-preferred-for-arrays-and-merge-sort-for-linked-lists/" ADD_DATE="1663582039">Quicksort vs Mergesort</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Reorder Linked List</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/reorder-list/" ADD_DATE="1663582039">Fold of Linked List</A>
<DT><A HREF="https://leetcode.com/problems/odd-even-linked-list/" ADD_DATE="1663582039">Unfold of Linked List</A>
<DT><A HREF="https://leetcode.com/problems/rotate-list/" ADD_DATE="1663582039">Rotate Linked List</A>
<DT><A HREF="https://leetcode.com/problems/insertion-sort-list/" ADD_DATE="1663582039">Insertion Sort List</A>
<DT><A HREF="https://leetcode.com/problems/split-linked-list-in-parts/" ADD_DATE="1663582039">Split List in K Parts</A>
<DT><A HREF="https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list/" ADD_DATE="1663582039">Flatten Multilevel DLL</A>
<DT><A HREF="https://leetcode.com/problems/copy-list-with-random-pointer/" ADD_DATE="1663582039">Clone List with Random Pointers</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/absolute-list-sorting/1" ADD_DATE="1663582039">Absolute List Sorting</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Big Integers as Lists</H3>
<DL><p>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/add-1-to-a-number-represented-as-linked-list/1" ADD_DATE="1663582039">Add 1 to Linked List</A>
<DT><A HREF="https://leetcode.com/problems/add-two-numbers/" ADD_DATE="1663582039">Add Two Lists - I</A>
<DT><A HREF="https://leetcode.com/problems/add-two-numbers-ii/" ADD_DATE="1663582039">Add Two Lists - II</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/subtraction-in-linked-list/1" ADD_DATE="1663582039">Subtract Two Lists</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/multiply-two-linked-lists/1" ADD_DATE="1663582039">Multiply Two Lists</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/polynomial-addition/1" ADD_DATE="1663582039">Polynomial Addition</A>
<DT><A HREF="https://www.geeksforgeeks.org/multiplication-of-two-polynomials-using-linked-list/" ADD_DATE="1663582039">Multiply Polynomials</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Design Cache</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/lru-cache/" ADD_DATE="1663582039">Design LRU Cache</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/page-faults-in-lru/0" ADD_DATE="1663582039">LRU Page Faults</A>
<DT><A HREF="https://leetcode.com/problems/lfu-cache/" ADD_DATE="1663582039">Design LFU Cache</A>
<DT><A HREF="https://leetcode.com/problems/insert-delete-getrandom-o1/" ADD_DATE="1663582039">Design GetRandom - I</A>
<DT><A HREF="https://leetcode.com/problems/insert-delete-getrandom-o1-duplicates-allowed/" ADD_DATE="1663582039">Design GetRandom - II</A>
</DL><p>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Stack & Queue</H3>
<DL><p>
<DT><A HREF="https://www.youtube.com/playlist?list=PLR5NJwv-15hncN6dEdPiTzFfEhaf_n6Qw" ADD_DATE="1663582039">Stack & Queue - Foundation</A>
<DT><A HREF="https://www.youtube.com/playlist?list=PLR5NJwv-15hkjpUnb_qxlrxG18448LOvL" ADD_DATE="1663582039">Stack & Queue - Advanced</A>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Stack & Queue Basics</H3>
<DL><p>
<DT><A HREF="https://www.scaler.com/topics/data-structures/stacks-in-data-structure/" ADD_DATE="1663582039">Stacks Theory</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/implement-stack-using-array/1" ADD_DATE="1663582039">Design Stack Using Array</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/implement-stack-using-linked-list/1" ADD_DATE="1663582039">Design Stack Using List</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/implement-two-stacks-in-an-array/1" ADD_DATE="1663582039">Design 2 Stacks in Array</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/n-stacks-in-an-array_1164271" ADD_DATE="1663582039">Design K Stacks in Array</A>
<DT><A HREF="https://www.geeksforgeeks.org/implement-stack-using-priority-queue-or-heap/" ADD_DATE="1663582039">Design Stack Using Heap</A>
<DT><A HREF="https://www.scaler.com/topics/data-structures/queue-in-data-structure/" ADD_DATE="1663582039">Queue Theory</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/implement-queue-using-array/1" ADD_DATE="1663582039">Design Queue Using Array</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/implement-queue-using-linked-list/1" ADD_DATE="1663582039">Design Queue Using List</A>
<DT><A HREF="https://leetcode.com/problems/design-circular-queue/" ADD_DATE="1663582039">Design Circular Queue</A>
<DT><A HREF="https://www.geeksforgeeks.org/circular-queue-set-1-introduction-array-implementation/" ADD_DATE="1663582039">Circular Queue Using Array</A>
<DT><A HREF="https://www.geeksforgeeks.org/circular-queue-set-2-circular-linked-list-implementation/" ADD_DATE="1663582039">Circular Queue Using List</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Doubly Ended Queue</H3>
<DL><p>
<DT><A HREF="https://www.scaler.com/topics/dequeue-in-data-structure/" ADD_DATE="1663582039">Deque Theory</A>
<DT><A HREF="https://leetcode.com/problems/design-circular-deque/" ADD_DATE="1663582039">Design Circular Deque</A>
<DT><A HREF="https://www.geeksforgeeks.org/implementation-deque-using-circular-array/" ADD_DATE="1663582039">Deque Using Circular Array</A>
<DT><A HREF="https://www.geeksforgeeks.org/implementation-deque-using-doubly-linked-list/" ADD_DATE="1663582039">Deque Using DLL</A>
<DT><A HREF="https://www.geeksforgeeks.org/implement-stack-queue-using-deque/" ADD_DATE="1663582039">Stack & Queue using Deque</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Design Stack or Queue</H3>
<DL><p>
<DT><A HREF="https://leetcode.com/problems/implement-stack-using-queues/" ADD_DATE="1663582039">Design Stack using Queue</A>
<DT><A HREF="https://leetcode.com/problems/implement-queue-using-stacks/" ADD_DATE="1663582039">Design Queue using Stack</A>
<DT><A HREF="https://leetcode.com/problems/min-stack/" ADD_DATE="1663582039">Design Minimum Stack</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/max-stack_985280" ADD_DATE="1663582039">Design Maximum Stack</A>
<DT><A HREF="https://leetcode.com/problems/maximum-frequency-stack/" ADD_DATE="1663582039">Design Max Frequency Stack</A>
<DT><A HREF="https://leetcode.com/problems/design-front-middle-back-queue/" ADD_DATE="1663582039">Design Middle Queue</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/delete-middle-element-of-a-stack/1" ADD_DATE="1663582039">Delete Middle in Stack</A>
<DT><A HREF="https://leetcode.com/problems/design-a-stack-with-increment-operation/" ADD_DATE="1663582039">Design Stack with Increments</A>
<DT><A HREF="https://leetcode.com/problems/validate-stack-sequences/" ADD_DATE="1663582039">Validate Stack Sequences</A>
<DT><A HREF="https://leetcode.com/problems/flatten-nested-list-iterator/" ADD_DATE="1663582039">Flatten Nested List Iterator</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Rearrange Stack or Queue</H3>
<DL><p>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/reverse-stack-using-recursion_631875" ADD_DATE="1663582039">Reverse Stack</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/reversing-queue_1170046" ADD_DATE="1663582039">Reverse Queue</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/sort-a-stack_985275" ADD_DATE="1663582039">Sort Stack</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/library/sorting-of-queue" ADD_DATE="1663582039">Sort Queue</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/interleave-the-first-half-of-the-queue-with-the-second-half_1169450" ADD_DATE="1663582039">Interleave Queue</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Parenthesis Matching</H3>
<DL><p>
<DT><A HREF="https://www.interviewbit.com/problems/redundant-braces/" ADD_DATE="1663582039">Redundant Braces</A>
<DT><A HREF="https://leetcode.com/problems/valid-parentheses/" ADD_DATE="1663582039">Balanced Parenthesis - I</A>
<DT><A HREF="https://leetcode.com/problems/valid-parenthesis-string/" ADD_DATE="1663582039">Balanced Parenthesis - II</A>
<DT><A HREF="https://leetcode.com/problems/remove-outermost-parentheses/" ADD_DATE="1663582039">Remove Outermost Paranthesis</A>
<DT><A HREF="https://leetcode.com/problems/longest-valid-parentheses/" ADD_DATE="1663582039">Longest Valid Parentheses</A>
<DT><A HREF="https://leetcode.com/problems/minimum-add-to-make-parentheses-valid/" ADD_DATE="1663582039">Min Additions for Balanced Braces - I</A>
<DT><A HREF="https://leetcode.com/problems/minimum-insertions-to-balance-a-parentheses-string/" ADD_DATE="1663582039">Min Additions for Balanced Braces - II</A>
<DT><A HREF="https://leetcode.com/problems/minimum-remove-to-make-valid-parentheses/" ADD_DATE="1663582039">Min Removals for Balanced Braces - I</A>
<DT><A HREF="https://leetcode.com/problems/remove-invalid-parentheses/" ADD_DATE="1663582039">Min Removals for Balanced Braces - II</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/count-the-reversals0401/1" ADD_DATE="1663582039">Min Reversals for Balanced Braces</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/minimum-swaps-for-bracket-balancing2704/1" ADD_DATE="1663582039">Min Swaps for Balanced Braces</A>
<DT><A HREF="https://leetcode.com/problems/score-of-parentheses/" ADD_DATE="1663582039">Score of Parenthesis</A>
<DT><A HREF="https://leetcode.com/problems/reverse-substrings-between-each-pair-of-parentheses/" ADD_DATE="1663582039">Reverse Substrings B/W Braces</A>
<DT><A HREF="https://leetcode.com/problems/decode-string/" ADD_DATE="1663582039">Decode String</A>
<DT><A HREF="https://leetcode.com/problems/number-of-atoms/" ADD_DATE="1663582039">Number of Atoms</A>
<DT><A HREF="https://leetcode.com/problems/maximum-nesting-depth-of-the-parentheses/" ADD_DATE="1663582039">Maximum Nesting Depth</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Expressions Evaluation</H3>
<DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Infix Expressions</H3>
<DL><p>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/arithmetic-expression-evaluation_1170517" ADD_DATE="1663582039">Infix Evaluation</A>
<DT><A HREF="https://www.geeksforgeeks.org/expression-evaluation/" ADD_DATE="1663582039">Infix Evaluation</A>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/stacks-and-queues/infix-conversions-official/ojquestion" ADD_DATE="1663582039">Infix Conversions</A>
<DT><A HREF="https://www.geeksforgeeks.org/convert-infix-prefix-notation/" ADD_DATE="1663582039">Infix To Prefix Conversion</A>
<DT><A HREF="https://practice.geeksforgeeks.org/problems/infix-to-postfix-1587115620/1" ADD_DATE="1663582039">Infix To Postfix Conversion</A>
<DT><A HREF="https://leetcode.com/problems/basic-calculator/" ADD_DATE="1663582039">Basic Calculator - I</A>
<DT><A HREF="https://leetcode.com/problems/basic-calculator-ii/" ADD_DATE="1663582039">Basic Calculator - II</A>
<DT><A HREF="https://www.pepcoding.com/resources/data-structures-and-algorithms-in-java-levelup/stacks/basic-calculator-3-official/ojquestion" ADD_DATE="1663582039">Basic Calculator - III</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Postfix Expressions</H3>
<DL><p>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/stacks-and-queues/postfix-evaluation-conversions-official/ojquestion" ADD_DATE="1663582039">Postfix Expression</A>
<DT><A HREF="https://leetcode.com/problems/evaluate-reverse-polish-notation/" ADD_DATE="1663582039">Postfix Evaluation</A>
<DT><A HREF="https://www.geeksforgeeks.org/postfix-to-infix/" ADD_DATE="1663582039">Postix to Infix Conversion</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/postfix-to-prefix_1788455" ADD_DATE="1663582039">Postfix to Prefix Conversion</A>
</DL><p>
<DT><H3 ADD_DATE="1663582039" LAST_MODIFIED="1663582039">Prefix Expressions</H3>
<DL><p>
<DT><A HREF="https://www.pepcoding.com/resources/online-java-foundation/stacks-and-queues/prefix-official/ojquestion" ADD_DATE="1663582039">Prefix Expression</A>
<DT><A HREF="https://www.geeksforgeeks.org/evaluation-prefix-expressions/" ADD_DATE="1663582039">Prefix Evaluation</A>
<DT><A HREF="https://www.codingninjas.com/codestudio/problems/prefix-to-infix_1215000" ADD_DATE="1663582039">Prefix to Infix Conversion</A>