Visual Studio Code & Intellij
| # | Title | Language | Tags |
|---|---|---|---|
| 1 | Two Sum | Python | HashMap |
| 2 | Add Two Numbers | Python | Linked List |
| 3 | Longest Substring Without Repeating Characters | Python | HashMap |
| 4 | Median of Two Sorted Arrays | Java, Python | Binary Search |
| 5 | Longest Palindromic Substring | Python | |
| 6 | ZigZag Conversion | Python | Math |
| 11 | Container With Most Water | Python | Two Pointers |
| 14 | Longest Common Prefix | Python | |
| 16 | 3Sum Closest | Python | Two Pointers |
| 17 | Letter Combinations of a Phone Number | Python | BFS |
| 19 | Remove Nth Node From End of List | Python | Two Pointers |
| 23 | Merge k Sorted Lists | Python | Linked List |
| 25 | Reverse Nodes in k-Group | Python | Linked List |
| 26 | Remove Duplicates from Sorted Array | Python | Two Pointers |
| 33 | Search in Rotated Sorted Array | Python | Binary Search |
| 34 | Find First and Last Position of Element in Sorted Array | Python | Binary Search |
| 35 | Search Insert Position | Java, Python | Binary Search |
| 39 | Combination Sum | Python | DFS |
| 40 | Combination Sum II | Python | DFS |
| 45 | Jump Game II | Python | DP, Greedy |
| 46 | Permutations | Python | DFS |
| 47 | Permutations II | Python | DFS |
| 49 | Group Anagrams | Python | HashSet |
| 50 | Pow(x, n) | Python | |
| 51 | N-Queens | Python | DFS |
| 53 | Maximum Subarray | Python | |
| 54 | Spiral Matrix | Python | |
| 55 | Jump Game | Python | DP, Greedy |
| 56 | Merge Intervals | Python | |
| 59 | Spiral Matrix II | Python | |
| 61 | Rotate List | Python | Linked List |
| 62 | Unique Paths | Python | DP |
| 63 | Unique Paths II | Python | DP |
| 64 | Minimum Path Sum | Python | DP |
| 70 | Climbing Stairs | Python | DP |
| 71 | Simplify Path | Python | Stack |
| 72 | Edit Distance | Python | DP |
| 74 | Search a 2D Matrix | Java, Python | Binary Search |
| 77 | Combinations | Python | DFS |
| 78 | Subsets | Python | DFS |
| 81 | Search in Rotated Sorted Array II | Python | |
| 82 | Remove Duplicates from Sorted List II | Python | Linked List |
| 83 | Remove Duplicates from Sorted List | Python | Linked List |
| 86 | Partition List | Python | Linked List |
| 88 | Merge Sorted Array | Python | |
| 91 | Decode Ways | Python | DP |
| 92 | Reverse Linked List II | Python | Linked List |
| 94 | Binary Tree Inorder Traversal | Python | Binary Tree |
| 97 | Interleaving String | Python | DP |
| 98 | Validate Binary Search Tree | Python | Binary Tree |
| 101 | Symmetric Tree | Python | Binary Tree |
| 102 | Binary Tree Level Order Traversal | Python | BFS |
| 103 | Binary Tree Zigzag Level Order Traversal | Python | BFS |
| 104 | Maximum Depth of Binary Tree | Python | Binary Tree |
| 107 | Binary Tree Level Order Traversal II | Python | BFS |
| 109 | Convert Sorted List to Binary Search Tree | Python | Linked List, Binary Tree |
| 110 | Balanced Binary Tree | Python | Binary Tree |
| 111 | Minimum Depth of Binary Tree | Python | Binary Tree |
| 114 | Flatten Binary Tree to Linked List | Python | Binary Tree |
| 115 | Distinct Subsequences | Python | DP |
| 116 | Populating Next Right Pointers in Each Node | Python | Binary Tree |
| 118 | Pascal's Triangle | Python | |
| 119 | Pascal's Triangle II | Python | |
| 120 | Triangle | Python | DP |
| 121 | Best Time to Buy and Sell Stock | Java, Python | |
| 122 | Best Time to Buy and Sell Stock II | Java, Python | |
| 123 | Best Time to Buy and Sell Stock III | Java, Python | Two State |
| 124 | Binary Tree Maximum Path Sum | Python | Binary Tree |
| 127 | Word Ladder | Python | BFS |
| 131 | Palindrome Partitioning | Python | DFS |
| 133 | Clone Graph | Python | Graph, DFS |
| 136 | Single Number | Python | Bit Manipulation |
| 138 | Copy List with Random Pointer | Python | Linked List |
| 139 | Word Break | Python | DP |
| 140 | Word Break II | Python | DFS + Memo |
| 141 | Linked List Cycle | Python | Linked List |
| 143 | Reorder Listl | Python | Linked List |
| 144 | Binary Tree Preorder Traversal | Python | Binary Tree |
| 145 | Binary Tree Postorder Traversal | Python | Binary Tree |
| 146 | LRU Cache | Python | Double Linked List + Hashset |
| 147 | Insertion Sort List | Python | Linked List, Insertion Sort |
| 150 | Evaluate Reverse Polish Notation | Python | Stack |
| 155 | Min Stack | Python | Stack |
| 160 | Intersection of Two Linked Lists | Python | Linked List |
| 162 | Find Peak Element | Python | Binary Search |
| 167 | Two Sum II - Input array is sorted | Python | Two Pointers |
| 173 | Binary Search Tree Iterator | Python | Binary Tree |
| 187 | Repeated DNA Sequences | Java, Python | Hash Table |
| 189 | Rotate Array | Python | Two Pointers |
| 198 | House Robber | Python | DP |
| 200 | Number of Islands | Python | DFS |
| 205 | Isomorphic Strings | Python | String |
| 206 | Reverse Linked List | Python | Linked List |
| 207 | Course Schedule | Python | Graph |
| 210 | Course Schedule II | Python | Graph |
| 213 | House Robber II | Python | DP |
| 217 | Contains Duplicate | Python | Hashset |
| 221 | Maximal Square | Python | DP |
| 232 | Implement Queue using Stacks | Python | Stack |
| 236 | Lowest Common Ancestor of a Binary Tree | Python | Binary Tree |
| 240 | Search a 2D Matrix | Python | Binary Search |
| 242 | Valid Anagram | Python | HashSet |
| 257 | Binary Tree Paths | Python | Binary Tree, DFS |
| 268 | Missing Number | Python | Math |
| 278 | First Bad Version | Python | Binary Search |
| 283 | Move Zeroes | Python | Two Pointers |
| 295 | Find Median from Data Stream | Python | Heap |
| 310 | Minimum Height Trees | Python | Graph |
| 322 | Coin Change | Python | BFS |
| 329 | Longest Increasing Path in a Matrix | Python | DFS + Memo |
| 304 | Range Sum Query 2D - Immutable | Python | DP |
| 344 | Reverse String | Python | Two Pointers |
| 350 | Intersection of Two Arrays II | Python | Hashmap |
| 384 | Shuffle an Array | Python | |
| 387 | First Unique Character in a String | Python | Stack |
| 394 | Decode String | Python | Stack |
| 412 | Fizz Buzz | Python | |
| 443 | String Compression | Python | Array |
| 445 | Add Two Numbers II | Python | Linked List |
| 458 | Poor Pigs | Python | Math |
| 485 | Max Consecutive Ones | Python | |
| 509 | FibonacciNumber | Python | DP |
| 529 | Minesweeper | Python | DFS |
| 563 | Binary Tree Tilt | Python | Binary Tree |
| 566 | ReshapeTheMatrix | Python | |
| 567 | Permutation in String | Python | Hashmap |
| 589 | N-ary Tree Preorder Traversal | Python | Tree |
| 593 | Valid Square | Python | Math |
| 611 | Valid Triangle Number | Python | Binary Tree |
| 650 | 2 Keys Keyboard | Python | Math |
| 662 | Maximum Width of Binary Tree | Python | Binary Tree |
| 701 | Insert into a Binary Search Tree | Python | Binary Tree |
| 704 | Binary Search | Python | Binary Search |
| 724 | Find Pivot Index | Python | Prefix Sum |
| 735 | Asteroid Collision | Python | Stack |
| 739 | Daily Temperatures | Python | Stack |
| 746 | Min Cost Climbing Stairs | Python | DP |
| 832 | Flipping an Image | Python | Two Pointers |
| 845 | Longest Mountain in Array | Python | |
| 853 | Car Fleet | Python | |
| 876 | Middle of the Linked List | Python | Two Pointers |
| 890 | Find and Replace Pattern | Python | Hashmap |
| 895 | Maximum Frequency Stack | Python | Stack |
| 938 | Range Sum of BST | Python | Binary Search Tree |
| 946 | Validate Stack Sequences | Python | Greedy |
| 977 | Squares of a Sorted Array | Python | Two Pointers |
| 991 | Broken Calculator | Python | Binary Search |
| 1007 | Minimum Domino Rotations For Equal Row | Python | |
| 1022 | Sum of Root To Leaf Binary Numbers | Java, Python | Binary Tree |
| 1026 | Maximum Difference Between Node and Ancestor | Python | Binary Tree |
| 1137 | N-th Tribonacci Number | Python | |
| 1143 | Longest Common Subsequence | Python | |
| 1217 | Minimum Cost to Move Chips to The Same Position | Python | |
| 1239 | Maximum Length of a Concatenated String with Unique Characters | Python | |
| 1283 | Find the Smallest Divisor Given a Threshold | Python | Binary Search |
| 1290 | Convert Binary Number in a Linked List to Integer | Python | Linked List |
| 1295 | Find Numbers with Even Number of Digits | Python | |
| 1333 | Filter Restaurants by Vegan-Friendly, Price and Distance | Python | |
| 1344 | Angle Between Hands of a Clock | Python | Math |
| 1446 | Consecutive Characters | Python | |
| 1440 | Running Sum of 1d Array | Python | Prefix Sum |
| 1448 | Count Good Nodes in Binary Tree | Python | |
| 1551 | Minimum Operations to Make Array Equal | Python | Math |
| 1594 | Maximum Non Negative Product in a Matrix | Python | DP |
| 1640 | Check Array Formation Through Concatenation | Python | HashMap |
| 1704 | Determine if String Halves Are Alike | Python | HashMap |