A collection of LeetCode questions to ace the coding interview! - Created using LeetHub v2

LeetCode Topics

Array

0001-two-sum
0004-median-of-two-sorted-arrays
0014-longest-common-prefix
0015-3sum
0018-4sum
0026-remove-duplicates-from-sorted-array
0031-next-permutation
0033-search-in-rotated-sorted-array
0035-search-insert-position
0039-combination-sum
0045-jump-game-ii
0048-rotate-image
0051-n-queens
0053-maximum-subarray
0054-spiral-matrix
0056-merge-intervals
0057-insert-interval
0073-set-matrix-zeroes
0074-search-a-2d-matrix
0075-sort-colors
0078-subsets
0081-search-in-rotated-sorted-array-ii
0088-merge-sorted-array
0090-subsets-ii
0121-best-time-to-buy-and-sell-stock
0136-single-number
0153-find-minimum-in-rotated-sorted-array
0162-find-peak-element
0169-majority-element
0189-rotate-array
0229-majority-element-ii
0240-search-a-2d-matrix-ii
0268-missing-number
0283-move-zeroes
0410-split-array-largest-sum
0485-max-consecutive-ones
0540-single-element-in-a-sorted-array
0792-binary-search
0882-peak-index-in-a-mountain-array
0907-koko-eating-bananas
1046-max-consecutive-ones-iii
1185-find-in-mountain-array
1421-find-numbers-with-even-number-of-digits
1539-kth-missing-positive-number
1605-minimum-number-of-days-to-make-m-bouquets
1791-richest-customer-wealth
1878-check-if-array-is-sorted-and-rotated
2149-rearrange-array-elements-by-sign

Two Pointers

0005-longest-palindromic-substring
0015-3sum
0018-4sum
0026-remove-duplicates-from-sorted-array
0031-next-permutation
0061-rotate-list
0075-sort-colors
0088-merge-sorted-array
0141-linked-list-cycle
0142-linked-list-cycle-ii
0143-reorder-list
0151-reverse-words-in-a-string
0189-rotate-array
0202-happy-number
0234-palindrome-linked-list
0283-move-zeroes
0344-reverse-string
0876-middle-of-the-linked-list
2095-delete-the-middle-node-of-a-linked-list
2149-rearrange-array-elements-by-sign

Math

0007-reverse-integer
0009-palindrome-number
0029-divide-two-integers
0048-rotate-image
0050-powx-n
0067-add-binary
0069-sqrtx
0070-climbing-stairs
0189-rotate-array
0202-happy-number
0268-missing-number
1421-find-numbers-with-even-number-of-digits
1444-number-of-steps-to-reduce-a-number-to-zero
2032-largest-odd-number-in-string
2050-count-good-numbers

String

0003-longest-substring-without-repeating-characters
0005-longest-palindromic-substring
0008-string-to-integer-atoi
0014-longest-common-prefix
0017-letter-combinations-of-a-phone-number
0020-valid-parentheses
0067-add-binary
0151-reverse-words-in-a-string
0205-isomorphic-strings
0242-valid-anagram
0344-reverse-string
0812-rotate-string
1737-maximum-nesting-depth-of-the-parentheses
1890-sum-of-beauty-of-all-substrings
2032-largest-odd-number-in-string

Hash Table

0001-two-sum
0003-longest-substring-without-repeating-characters
0017-letter-combinations-of-a-phone-number
0073-set-matrix-zeroes
0141-linked-list-cycle
0142-linked-list-cycle-ii
0169-majority-element
0202-happy-number
0205-isomorphic-strings
0229-majority-element-ii
0242-valid-anagram
0268-missing-number
1890-sum-of-beauty-of-all-substrings

Binary Search

0004-median-of-two-sorted-arrays
0033-search-in-rotated-sorted-array
0035-search-insert-position
0069-sqrtx
0074-search-a-2d-matrix
0081-search-in-rotated-sorted-array-ii
0153-find-minimum-in-rotated-sorted-array
0162-find-peak-element
0240-search-a-2d-matrix-ii
0268-missing-number
0410-split-array-largest-sum
0540-single-element-in-a-sorted-array
0792-binary-search
0882-peak-index-in-a-mountain-array
0907-koko-eating-bananas
1046-max-consecutive-ones-iii
1185-find-in-mountain-array
1539-kth-missing-positive-number
1605-minimum-number-of-days-to-make-m-bouquets

Bit Manipulation

0029-divide-two-integers
0067-add-binary
0078-subsets
0090-subsets-ii
0136-single-number
0190-reverse-bits
0268-missing-number
1444-number-of-steps-to-reduce-a-number-to-zero

Sorting

0015-3sum
0018-4sum
0056-merge-intervals
0075-sort-colors
0088-merge-sorted-array
0169-majority-element
0229-majority-element-ii
0242-valid-anagram
0268-missing-number

Matrix

0048-rotate-image
0054-spiral-matrix
0073-set-matrix-zeroes
0074-search-a-2d-matrix
0240-search-a-2d-matrix-ii
1791-richest-customer-wealth

Interactive

1185-find-in-mountain-array

Dynamic Programming

0005-longest-palindromic-substring
0045-jump-game-ii
0053-maximum-subarray
0070-climbing-stairs
0121-best-time-to-buy-and-sell-stock
0410-split-array-largest-sum

Greedy

0045-jump-game-ii
0410-split-array-largest-sum
2032-largest-odd-number-in-string

Prefix Sum

0410-split-array-largest-sum
1046-max-consecutive-ones-iii

Trie

0014-longest-common-prefix

Divide and Conquer

0004-median-of-two-sorted-arrays
0053-maximum-subarray
0169-majority-element
0190-reverse-bits
0240-search-a-2d-matrix-ii

String Matching

0812-rotate-string

Stack

0020-valid-parentheses
0143-reorder-list
0234-palindrome-linked-list
1737-maximum-nesting-depth-of-the-parentheses

Counting

0169-majority-element
0229-majority-element-ii
1890-sum-of-beauty-of-all-substrings

Sliding Window

0003-longest-substring-without-repeating-characters
1046-max-consecutive-ones-iii

Recursion

0021-merge-two-sorted-lists
0050-powx-n
0143-reorder-list
0206-reverse-linked-list
0234-palindrome-linked-list
2050-count-good-numbers

Simulation

0054-spiral-matrix
0067-add-binary
2149-rearrange-array-elements-by-sign

Backtracking

0017-letter-combinations-of-a-phone-number
0039-combination-sum
0051-n-queens
0078-subsets
0090-subsets-ii

Memoization

0070-climbing-stairs

Linked List

0021-merge-two-sorted-lists
0061-rotate-list
0083-remove-duplicates-from-sorted-list
0141-linked-list-cycle
0142-linked-list-cycle-ii
0143-reorder-list
0206-reverse-linked-list
0234-palindrome-linked-list
0328-odd-even-linked-list
0876-middle-of-the-linked-list
2095-delete-the-middle-node-of-a-linked-list

Depth-First Search

0207-course-schedule

Breadth-First Search

0207-course-schedule

Graph Theory

0207-course-schedule

Topological Sort

0207-course-schedule