Java-Interview-Solutions

Our solutions to some of the Leetcode questions

IMPORTANT TO NEVER FORGET:

Arrays is Arrays.sort()

Everything else Collections.sort()

Find a # - Use Binary Search

Double(maybe more loops) for loop Use HashMap(likely for counter)

CodePath:

https://guides.codepath.com/compsci

Name		Name	Last commit message	Last commit date
Latest commit History 253 Commits
legitlegit		legitlegit
1. Two Sum		1. Two Sum
100. Same Tree		100. Same Tree
1008. Construct Binary Search Tree from Preorder Traversal		1008. Construct Binary Search Tree from Preorder Traversal
1009. Complement of Base 10 Integer		1009. Complement of Base 10 Integer
1021. Remove Outermost Parentheses		1021. Remove Outermost Parentheses
1025. Divisor Game		1025. Divisor Game
1033. Moving Stones Until Consecutive		1033. Moving Stones Until Consecutive
1046. Last Stone Weight		1046. Last Stone Weight
1051. Height Checker		1051. Height Checker
1089. Duplicate Zeros		1089. Duplicate Zeros
11. Container With Most Water		11. Container With Most Water
1108. Defanging an IP Address		1108. Defanging an IP Address
1119. Remove Vowels from a String		1119. Remove Vowels from a String
1200. Minimum Absolute Difference		1200. Minimum Absolute Difference
121. Best Time to Buy and Sell Stock		121. Best Time to Buy and Sell Stock
122. Best Time to Buy and Sell Stock II		122. Best Time to Buy and Sell Stock II
1232. Check If It Is a Straight Line		1232. Check If It Is a Straight Line
125. Valid Palindrome		125. Valid Palindrome
1254. Number of Closed Islands		1254. Number of Closed Islands
1281. Subtract the Product and Sum of Digits of an Integer		1281. Subtract the Product and Sum of Digits of an Integer
129. Sum Root to Leaf Numbers		129. Sum Root to Leaf Numbers
1295. Find Numbers with Even Number of Digits		1295. Find Numbers with Even Number of Digits
13. Roman to Integer		13. Roman to Integer
1304. Find N Unique Integers Sum up to Zero		1304. Find N Unique Integers Sum up to Zero
1328. Break a Palindrome		1328. Break a Palindrome
133. Clone Graph		133. Clone Graph
1342. Number of Steps to Reduce a Number to Zero		1342. Number of Steps to Reduce a Number to Zero
136. Single Number		136. Single Number
1365. How Many Numbers Are Smaller Than the Current Number		1365. How Many Numbers Are Smaller Than the Current Number
14. Longest Common Prefix		14. Longest Common Prefix
141. Linked List Cycle		141. Linked List Cycle
1431. Kids With the Greatest Number of Candies		1431. Kids With the Greatest Number of Candies
1470. Shuffle the Array		1470. Shuffle the Array
148. Sort List		148. Sort List
1480. Running Sum of 1d Array		1480. Running Sum of 1d Array
151. Reverse Words in a String		151. Reverse Words in a String
1512. Number of Good Pairs		1512. Number of Good Pairs
1528. Shuffle String		1528. Shuffle String
155. Min Stack		155. Min Stack
160. Intersection of Two Linked Lists		160. Intersection of Two Linked Lists
1672. Richest Customer Wealth		1672. Richest Customer Wealth
169. Majority Element		169. Majority Element
171. Excel Sheet Column Number		171. Excel Sheet Column Number
1822. Sign of the Product of an Array		1822. Sign of the Product of an Array
189. Rotate Array		189. Rotate Array
1920. Build Array from Permutation		1920. Build Array from Permutation
1929. Concatenation of Array		1929. Concatenation of Array
2. Add Two Numbers		2. Add Two Numbers
20. Valid Parentheses		20. Valid Parentheses
2011. Final Value of Variable After Performing Operations		2011. Final Value of Variable After Performing Operations
202. Happy Number		202. Happy Number
206. Reverse Linked List		206. Reverse Linked List
208. Implement Trie (Prefix Tree)		208. Implement Trie (Prefix Tree)
21. Merge Two Sorted Lists		21. Merge Two Sorted Lists
2114. Maximum Number of Words Found in Sentences		2114. Maximum Number of Words Found in Sentences
217. Contains Duplicate		217. Contains Duplicate
222. Count Complete Tree Nodes		222. Count Complete Tree Nodes
228. Summary Ranges		228. Summary Ranges
23. Merge k Sorted Lists		23. Merge k Sorted Lists
230. Kth Smallest Element in a BST		230. Kth Smallest Element in a BST
231. Power of Two		231. Power of Two
234. Palindrome Linked List		234. Palindrome Linked List
238. Product of Array Except Self		238. Product of Array Except Self
242. Valid Anagram		242. Valid Anagram
26. Remove Duplicates from Sorted Array		26. Remove Duplicates from Sorted Array
263. Ugly Number		263. Ugly Number
268. Missing Number		268. Missing Number
27. Remove Element		27. Remove Element
283. Move Zeroes		283. Move Zeroes
292. Nim Game		292. Nim Game
3. Longest Substring Without Repeating Characters		3. Longest Substring Without Repeating Characters
322. Coin Change		322. Coin Change
328. Odd Even Linked List		328. Odd Even Linked List
344. Reverse String		344. Reverse String
349. Intersection of Two Arrays		349. Intersection of Two Arrays
35. Search Insert Position		35. Search Insert Position
350. Intersection of Two Arrays II		350. Intersection of Two Arrays II
383. Ransom Note		383. Ransom Note
387. First Unique Character in a String		387. First Unique Character in a String
392. Is Subsequence		392. Is Subsequence
412. Fizz Buzz		412. Fizz Buzz
445. Add Two Numbers II		445. Add Two Numbers II
476. Number Complement		476. Number Complement
485. Max Consecutive Ones		485. Max Consecutive Ones
49. Group Anagrams		49. Group Anagrams
509. Fibonacci Number		509. Fibonacci Number
525. Contiguous Array		525. Contiguous Array
53. Maximum Subarray		53. Maximum Subarray
532. K-diff Pairs in an Array		532. K-diff Pairs in an Array
543. Diameter of Binary Tree		543. Diameter of Binary Tree
557. Reverse Words in a String III		557. Reverse Words in a String III
567. Permutation in String		567. Permutation in String
58. Length of Last Word		58. Length of Last Word
589. N-ary Tree Preorder Traversal		589. N-ary Tree Preorder Traversal
61. Rotate List		61. Rotate List
66. Plus One		66. Plus One
678. Valid Parenthesis String		678. Valid Parenthesis String
7. Reverse Integer		7. Reverse Integer
700. Search in a Binary Search Tree		700. Search in a Binary Search Tree

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Repository files navigation

Java-Interview-Solutions

IMPORTANT TO NEVER FORGET:

CodePath:

About

Releases

Packages

Contributors 2

jessica/Java-Interview-Solutions

Folders and files

Latest commit

History

Repository files navigation

Java-Interview-Solutions

IMPORTANT TO NEVER FORGET:

CodePath:

About

Resources

Stars

Watchers

Forks

Releases

Packages 0

Contributors 2

Packages