| 528. Random Pick with Weight | | | Solve | Medium | | |
| 529. Minesweeper | | | Solve | Medium | | |
| 531. Lonely Pixel I | | | Solve | Medium | | |
| 532. K-diff Pairs in an Array | | | Solve | Medium | | |
| 533. Lonely Pixel II | | | Solve | Medium | | |
| 539. Minimum Time Difference | | | Solve | Medium | | |
| 540. Single Element in a Sorted Array | | | Solve | Medium | | |
| 542. 01 Matrix | | | Solve | Medium | | |
| 553. Optimal Division | | | Solve | Medium | | |
| 554. Brick Wall | | | Solve | Medium | | |
| 555. Split Concatenated Strings | | | Solve | Medium | | |
| 560. Subarray Sum Equals K | | | Solve | Medium | | |
| 562. Longest Line of Consecutive One in Matrix | | | Solve | Medium | | |
| 565. Array Nesting | | | Solve | Medium | | |
| 573. Squirrel Simulation | | | Solve | Medium | | |
| 581. Shortest Unsorted Continuous Subarray | | | Solve | Medium | | |
| 582. Kill Process | | | Solve | Medium | | |
| 609. Find Duplicate File in System | | | Solve | Medium | | |
| 611. Valid Triangle Number | | | Solve | Medium | | |
| 616. Add Bold Tag in String | | | Solve | Medium | | |
| 621. Task Scheduler | | | Solve | Medium | | |
| 622. Design Circular Queue | | | Solve | Medium | | |
| 624. Maximum Distance in Arrays | | | Solve | Medium | | |
| 636. Exclusive Time of Functions | | | Solve | Medium | | |
| 638. Shopping Offers | | | Solve | Medium | | |
| 641. Design Circular Deque | | | Solve | Medium | - | |
| 646. Maximum Length of Pair Chain | | | Solve | Medium | | |
| 648. Replace Words | | | Solve | Medium | | |
| 654. Maximum Binary Tree | | | Solve | Medium | | |
| 658. Find K Closest Elements | | | Solve | Medium | | |
| 659. Split Array into Consecutive Subsequences | | | Solve | Medium | | |
| 665. Non-decreasing Array | | | Solve | Medium | | |
| 666. Path Sum IV | | | Solve | Medium | | |
| 667. Beautiful Arrangement II | | | Solve | Medium | | |
| 673. Number of Longest Increasing Subsequence | | | Solve | Medium | | |
| 690. Employee Importance | | | Solve | Medium | | |
| 695. Max Area of Island | | | Solve | Medium | | |
| 698. Partition to K Equal Sum Subsets | | | Solve | Medium | | |
| 702. Search in a Sorted Array of Unknown Size | | | Solve | Medium | | |
| 713. Subarray Product Less Than K | | | Solve | Medium | | |
| 714. Best Time to Buy and Sell Stock with Transaction Fee | | | Solve | Medium | | |
| 718. Maximum Length of Repeated Subarray | | | Solve | Medium | | |
| 720. Longest Word in Dictionary | | | Solve | Medium | | |
| 721. Accounts Merge | | | Solve | Medium | | |
| 722. Remove Comments | | | Solve | Medium | | |
| 723. Candy Crush | | | Solve | Medium | | |
| 729. My Calendar I | | | Solve | Medium | | |
| 731. My Calendar II | | | Solve | Medium | | |
| 735. Asteroid Collision | | | Solve | Medium | | |
| 737. Sentence Similarity II | | | Solve | Medium | | |
