| 454. 4Sum II | | | Solve | Medium | | |
| 494. Target Sum | | | Solve | Medium | | |
| 503. Next Greater Element II | | | Solve | Medium | | |
| 516. Longest Palindromic Subsequence | | | Solve | Medium | | |
| 518. Coin Change II | | | Solve | Medium | | |
| 529. Minesweeper | | | Solve | Medium | | |
| 532. K-diff Pairs in an Array | | | Solve | Medium | | |
| 535. Encode and Decode TinyURL | | | Solve | Medium | | |
| 538. Convert BST to Greater Tree | | | Solve | Medium | | |
| 542. 01 Matrix | | | Solve | Medium | | |
| 545. Boundary of Binary Tree | | | Solve | Medium | | |
| 554. Brick Wall | | | Solve | Medium | | |
| 556. Next Greater Element III | | | Solve | Medium | | |
| 560. Subarray Sum Equals K | | | Solve | Medium | | |
| 567. Permutation in String | | | Solve | Medium | | |
| 570. Managers with at Least 5 Direct Reports | | | Solve | Medium | | |
| 611. Valid Triangle Number | | | Solve | Medium | | |
| 626. Exchange Seats | | | Solve | Medium | | |
| 633. Sum of Square Numbers | | | Solve | Medium | | |
| 646. Maximum Length of Pair Chain | | | Solve | Medium | | |
| 652. Find Duplicate Subtrees | | | Solve | Medium | | |
| 658. Find K Closest Elements | | | Solve | Medium | | |
| 659. Split Array into Consecutive Subsequences | | | Solve | Medium | | |
| 662. Maximum Width of Binary Tree | | | Solve | Medium | | |
| 665. Non-decreasing Array | | | Solve | Medium | | |
| 673. Number of Longest Increasing Subsequence | | | Solve | Medium | | |
| 692. Top K Frequent Words | | | Solve | Medium | | |
| 694. Number of Distinct Islands | | | Solve | Medium | | |
| 723. Candy Crush | | | Solve | Medium | | |
| 779. K-th Symbol in Grammar | | | Solve | Medium | | |
| 787. Cheapest Flights Within K Stops | | | Solve | Medium | | |
| 797. All Paths From Source to Target | | | Solve | Medium | | |
| 802. Find Eventual Safe States | | | Solve | Medium | | |
| 823. Binary Trees With Factors | | | Solve | Medium | | |
| 835. Image Overlap | | | Solve | Medium | | |
| 838. Push Dominoes | | | Solve | Medium | | |
| 845. Longest Mountain in Array | | | Solve | Medium | | |
| 852. Peak Index in a Mountain Array | | | Solve | Medium | | |
| 853. Car Fleet | | | Solve | Medium | | |
| 856. Score of Parentheses | | | Solve | Medium | | |
| 858. Mirror Reflection | | | Solve | Medium | | |
| 881. Boats to Save People | | | Solve | Medium | | |
| 886. Possible Bipartition | | | Solve | Medium | | |
| 894. All Possible Full Binary Trees | | | Solve | Medium | | |
| 901. Online Stock Span | | | Solve | Medium | | |
| 907. Sum of Subarray Minimums | | | Solve | Medium | | |
| 912. Sort an Array | | | Solve | Medium | | |
| 935. Knight Dialer | | | Solve | Medium | | |
| 948. Bag of Tokens | | | Solve | Medium | | |
| 967. Numbers With Same Consecutive Differences | | | Solve | Medium | | |
