LeetCode-Solutions

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

LeetCode Topics

Array

0011-container-with-most-water
0045-jump-game-ii
0066-plus-one
0073-set-matrix-zeroes
0080-remove-duplicates-from-sorted-array-ii
0088-merge-sorted-array
0121-best-time-to-buy-and-sell-stock
0122-best-time-to-buy-and-sell-stock-ii
0135-candy
0169-majority-element
0189-rotate-array
0274-h-index
0594-longest-harmonious-subsequence
1227-number-of-equivalent-domino-pairs
1421-find-numbers-with-even-number-of-digits
1586-longest-subarray-of-1s-after-deleting-one-element
1813-maximum-erasure-value
2048-build-array-from-permutation
2215-finding-3-digit-even-numbers
2237-longest-palindrome-by-concatenating-two-letter-words
3143-longest-unequal-adjacent-groups-subsequence-i
3321-type-of-triangle
3639-zero-array-transformation-i

Math

0066-plus-one
0171-excel-sheet-column-number
0189-rotate-array
1421-find-numbers-with-even-number-of-digits
1529-max-difference-you-can-get-from-changing-an-integer
3321-type-of-triangle
3630-total-characters-in-string-after-transformations-ii

Hash Table

0073-set-matrix-zeroes
0141-linked-list-cycle
0169-majority-element
0383-ransom-note
0594-longest-harmonious-subsequence
1227-number-of-equivalent-domino-pairs
1813-maximum-erasure-value
2215-finding-3-digit-even-numbers
2237-longest-palindrome-by-concatenating-two-letter-words
3630-total-characters-in-string-after-transformations-ii

Counting

0169-majority-element
0383-ransom-note
0594-longest-harmonious-subsequence
1227-number-of-equivalent-domino-pairs
2237-longest-palindrome-by-concatenating-two-letter-words
3630-total-characters-in-string-after-transformations-ii

Dynamic Programming

0045-jump-game-ii
0121-best-time-to-buy-and-sell-stock
0122-best-time-to-buy-and-sell-stock-ii
0392-is-subsequence
0806-domino-and-tromino-tiling
1586-longest-subarray-of-1s-after-deleting-one-element
2061-painting-a-grid-with-three-different-colors
3143-longest-unequal-adjacent-groups-subsequence-i
3630-total-characters-in-string-after-transformations-ii

Simulation

2048-build-array-from-permutation

Two Pointers

0011-container-with-most-water
0080-remove-duplicates-from-sorted-array-ii
0082-remove-duplicates-from-sorted-list-ii
0088-merge-sorted-array
0125-valid-palindrome
0141-linked-list-cycle
0189-rotate-array
0392-is-subsequence

Sorting

0088-merge-sorted-array
0169-majority-element
0274-h-index
0594-longest-harmonious-subsequence
2215-finding-3-digit-even-numbers
3321-type-of-triangle

Enumeration

2215-finding-3-digit-even-numbers

Divide and Conquer

0169-majority-element

String

0038-count-and-say
0125-valid-palindrome
0171-excel-sheet-column-number
0257-binary-tree-paths
0383-ransom-note
0392-is-subsequence
2237-longest-palindrome-by-concatenating-two-letter-words
3143-longest-unequal-adjacent-groups-subsequence-i
3396-valid-word
3630-total-characters-in-string-after-transformations-ii

Greedy

0011-container-with-most-water
0045-jump-game-ii
0122-best-time-to-buy-and-sell-stock-ii
0135-candy
1529-max-difference-you-can-get-from-changing-an-integer
2237-longest-palindrome-by-concatenating-two-letter-words
3143-longest-unequal-adjacent-groups-subsequence-i

Prefix Sum

3639-zero-array-transformation-i

Matrix

0073-set-matrix-zeroes

Counting Sort

0274-h-index

Sliding Window

0594-longest-harmonious-subsequence
1586-longest-subarray-of-1s-after-deleting-one-element
1813-maximum-erasure-value

Backtracking

0257-binary-tree-paths

Tree

0100-same-tree
0104-maximum-depth-of-binary-tree
0257-binary-tree-paths

Depth-First Search

0100-same-tree
0104-maximum-depth-of-binary-tree
0257-binary-tree-paths

Binary Tree

0100-same-tree
0104-maximum-depth-of-binary-tree
0257-binary-tree-paths

Breadth-First Search

0100-same-tree
0104-maximum-depth-of-binary-tree

Linked List

0082-remove-duplicates-from-sorted-list-ii
0141-linked-list-cycle