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| # | Title | Solutions | Difficulty | Tag |
|---|---|---|---|---|
| 704 | binary-search | Solution | Easy | Array, Binary Search |
| 278 | first-bad-version | Solution | Easy | Binary Search |
| 35 | search-insert-position | Solution | Easy | Array, Binary Search |
| 977 | squares-of-a-sorted-array | Solution | Easy | Array, Two Pointers, Sort |
| 189 | rotate-array | Solution | Medium | Array, Two Pointers, Math |
| 283 | move-zeroes | Solution | Easy | Array, Two Pointers |
| 167 | two-sum-ii-input-array-is-sorted | Solution | Easy | Array, Two Pointers, Binary Search |
| 344 | reverse-string | Solution | Easy | Recursion, Two Pointers, String |
| 557 | reverse-words-in-a-string-iii | Solution | Easy | Two Pointers, String |
| 876 | middle-of-the-linked-list | Solution | Easy | LinkedList, Two Pointers |
| 19 | remove-nth-node-from-end-of-list | Solution | Medium | LinkedList, Two Pointers |
| 3 | longest-substring-without-repeating-characters | Solution | Medium | HashTable, String, Sliding Window |
| 567 | permutation-in-string | Solution | Medium | HashTable, Two Pointers, String |
| 733 | flood-fill | Solution | Easy | DFS, BFS, Array |
| 695 | max-area-of-island | Solution | Medium | DFS, BFS |
| 617 | merge-two-binary-trees | Solution | Easy | Tree, DFS, BFS |
| 116 | populating-next-right-pointers-in-each-node | Solution | Medium | Tree, DFS, BFS |
| 542 | 01-matrix | Solution | Medium | BFS, Array, Dynamic Programming |
| 994 | rotting-oranges | Solution | Medium | BFS, Array, Matrix |
| 21 | merge-two-sorted-lists | Solution | Easy | Recursion, LinkedList |
| 206 | reverse-linked-list | Solution | Easy | Recursion, LinkedList |
| 77 | combinations | Solution | Medium | Array, Backtracking |
| 46 | permutations | Solution | Medium | Array, Backtracking |
| 784 | letter-case-permutation | Solution | Medium | Bit Manipulation, String, Backtracking |
| 70 | climbing-stairs | Solution | Easy | Memory Search, Math, Dynamic Programming |
| 198 | house-robber | Solution | Medium | Array, Dynamic Programming |
| 120 | triangle | Solution | Medium | Array, Dynamic Programming |
| 231 | power-of-two | Solution | Easy | Bit Manipulation, Recursion, Math |
| 191 | number-of-1-bits | Solution | Easy | Bit Manipulation |
| 190 | reverse-bits | Solution | Easy | Bit Manipulation, Divide and Conquer |
| 136 | single-number | Solution | Easy | Bit Manipulation, Array |
| 34 | find-first-and-last-position-of-element-in-sorted-array | Solution | Medium | Array, Binary Search |
| 153 | find-minimum-in-rotated-sorted-array | Solution | Medium | Array, Binary Search |
| 33 | search-in-rotated-sorted-array | Solution | Medium | Array, Binary Search |
| 82 | remove-duplicates-from-sorted-list-ii | Solution | Medium | LinkedList, Two Pointers |
| 844 | backspace-string-compare | Solution | Easy | Stack, Two Pointers, String, Simulation |
| 986 | interval-list-intersections | Solution | Medium | Array, Two Pointers |
| 438 | find-all-anagrams-in-a-string | Solution | Medium | Hash Table, String, Sliding Window |
| 713 | subarray-product-less-than-k | Solution | Medium | Array, Sliding Window |
| 200 | number-of-islands | Solution | Medium | DFS, BFS |
| 117 | populating-next-right-pointers-in-each-node-ii | Solution | Medium | Tree, DFS, BFS |
| 1091 | shortest-path-in-binary-matrix | Solution | Medium | BFS, Array, Matrix |
| 78 | subsets | Solution | Medium | Bit Manipulation, Array, Backtracking |
| 47 | permutations-ii | Solution | Medium | Array, Backtracking |
| 17 | letter-combinations-of-a-phone-number | Solution | Medium | Hash Table, String, Backtracking |
| 213 | house-robber-ii | Solution | Medium | Array, Dynamic Programming |
| 45 | jump-game-ii | Solution | Medium | Greedy, Array, Dynamic Programming |
| 5 | longest-palindromic-substring | Solution | Medium | String, Dynamic Programming |
| 91 | decode-ways | Solution | Medium | String, Dynamic Programming |
| 300 | longest-increasing-subsequence | Solution | Medium | Array, Binary Search, Dynamic Programming |
| 1143 | longest-common-subsequence | Solution | Medium | String, Dynamic Programming |
| 322 | coin-change | Solution | Medium | BFS, Array, Dynamic Programming |
| 201 | bitwise-and-of-numbers-range | Solution | Medium | Bit Manipulation |
| 384 | shuffle-an-array | Solution | Medium | Array, Math, Randomized |
| 130 | surrounded-regions | Solution | Medium | Array, Math, Randomized |
| 74 | search-a-2d-matrix | Solution | Medium | Array, Binary Search, Matrix |
| 162 | find-peak-element | Solution | Medium | Array, Binary Search |
| 15 | 3sum | Solution | Medium | Array, Two Pointers, Sorting |
| 11 | container-with-most-water | Solution | Medium | Greedy, Array, Two Pointers |
| 209 | minimum-size-subarray-sum | Solution | Medium | Array, Binary Search, Prefix Sum |
| 547 | number-of-provinces | Solution | Medium | DFS, BFS |
| 572 | subtree-of-another-tree | Solution | Easy | Tree, DFS, Binary Tree |
| 797 | all-paths-from-source-to-target | Solution | Medium | DFS, BFS, Graph |
| 90 | subsets-ii | Solution | Medium | Bit Manipulation, Array, Backtracking |
| 39 | combination-sum | Solution | Medium | Array, Backtracking |
| 22 | generate-parentheses | Solution | Medium | String, Dynamic Programming, Backtracking |
| 55 | jump-game | Solution | Medium | Greedy, Array, Dynamic Programming |
| 62 | unique-paths | Solution | Medium | Math, Dynamic Programming, Combinatorics |
| 40 | combination-sum-ii | Solution | Medium | Array, Backtracking |
| 413 | arithmetic-slices | Solution | Medium | Array, Backtracking |
| 79 | word-search | Solution | Medium | Array, Backtracking, Matrix |
| 139 | word-break | Solution | Medium | Trie, Memoization, Array, Hash Table |
| 673 | number-of-longest-increasing-subsequence | Solution | Medium | Binary Indexed Tree, Segment Tree, Array |
| 583 | delete-operation-for-two-strings | Solution | Medium | String, Dynamic Programming |
| 343 | integer-break | Solution | Medium | Math, Dynamic Programming |
| 72 | edit-distance | Solution | Hard | String, Dynamic Programming |
| 202 | happy-number | Solution | Easy | Hash Table, Math, Two Pointers |
| 149 | max-points-on-a-line | Solution | Hard | Geometry, Hash Table, Math |
| 217 | contains-duplicate | Solution | Easy | Array, Hash Table, Sorting |
| 1 | two-sum | Solution | Easy | Array, Hash Table |
| 350 | intersection-of-two-arrays-ii | Solution | Easy | Array, Hash Table, Two Pointers, Binary Search |
| 566 | reshape-the-matrix | Solution | Easy | Array, Matrix, Simulation |