| # | Title | Solution | Runtime |
|---|---|---|---|
| 22 | Generate Parentheses | Java | |
| 31 | Next Permutation | Java | 1 ms |
| 42 | Trapping Rain Water | Java | 1 ms |
| 46 | Permutations | Java | 2 ms |
| 47 | Permutations II | Java | 1 ms |
| 56 | Merge Intervals | Java | 5 ms |
| 93 | Restore IP Addresses | Java | 11 ms |
| 103 | Binary Tree Zigzag Level Order Traversal | Java | 1 ms |
| 124 | Binary Tree Maximum Path Sum | Java | 1 ms |
| 128 | Longest Consecutive Sequence | Java | 6 ms |
| 146 | LRU Cache | Java | 12 ms |
| 150 | Evaluate Reverse Polish Notation | Java | 5 ms |
| 153 | Find Minimum in Rotated Sorted Array | Java | 0 ms |
| 199 | Binary Tree Right Side View | Java | 1 ms |
| 200 | Number of Islands | Java | 1 ms |
| 220 | Contains Duplicate III | Java | 16 ms |
| 238 | Product of Array Except Self | Java | 1 ms |
| 417 | Pacific Atlantic Water Flow | Java | 383 ms |
| 435 | Non-overlapping Intervals | Java | 2 ms |
| 529 | Minesweeper | Java | 1 ms |
| 767 | Reorganize String | Java | 17 ms |
| 993 | Cousins in Binary Tree | Java | 0 ms |
| 1415 | The k-th Lexicographical String of All Happy Strings of Length n | Java | 62 ms |
| 1561 | Maximum Number of Coins You Can Get | Java | 40 ms |