| 403 | Frog Jump | Hard |
| 415 | Add Strings | Easy |
| 445 | Add Two Numbers II | Medium |
| 454 | 4Sum II | Medium |
| 455 | Assign Cookies | Easy |
| 456 | 132 Pattern | Medium |
| 458 | Poor Pigs | Hard |
| 459 | Repeated Substring Pattern | Easy |
| 478 | Generate Random Point in a Circle | Medium |
| 486 | Predict the Winner | Medium |
| 496 | Next Greater Element I | Easy |
| 501 | Find Mode in Binary Search Tree | Easy |
| 503 | Next Greater Element II | Medium |
| 513 | Find Bottom Left Tree Value | Medium |
| 514 | Freedom Trail | Hard |
| 515 | Find Largest Value in Each Tree Row | Medium |
| 516 | Longest Palindromic Subsequence | Medium |
| 518 | Coin Change II | Medium |
| 525 | Contiguous Array | Medium |
| 537 | Complex Number Multiplication | Medium |
| 542 | 01 Matrix | Medium |
| 543 | Diameter of Binary Tree | Easy |
| 547 | Friend Circles | Medium |
| 556 | Next Greater Element III | Medium |
| 557 | Reverse Words in a String III | Easy |
| 560 | Subarray Sum Equals K | Medium |
| 566 | Reshape the Matrix | Easy |
| 576 | Out of Boundary Paths | Medium |
| 606 | Construct String from Binary Tree | Easy |
| 617 | Merge Two Binary Trees | Easy |