| 681. Next Closest Time | | | Solve | Medium | | |
| 684. Redundant Connection | | | Solve | Medium | | |
| 686. Repeated String Match | | | Solve | Medium | | |
| 690. Employee Importance | | | Solve | Medium | | |
| 692. Top K Frequent Words | | | 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 | | |
| 707. Design Linked List | | | Solve | Medium | | |
| 708. Insert into a Sorted Circular Linked List | | | Solve | Medium | | |
| 720. Longest Word in Dictionary | | | Solve | Medium | | |
| 721. Accounts Merge | | | Solve | Medium | | |
| 722. Remove Comments | | | Solve | Medium | | |
| 729. My Calendar I | | | Solve | Medium | | |
| 731. My Calendar II | | | Solve | Medium | | |
| 740. Delete and Earn | | | Solve | Medium | | |
| 743. Network Delay Time | | | Solve | Medium | | |
| 752. Open the Lock | | | Solve | Medium | | |
| 756. Pyramid Transition Matrix | | | Solve | Medium | | |
| 758. Bold Words in String | | | Solve | Medium | | |
| 763. Partition Labels | | | Solve | Medium | | |
| 767. Reorganize String | | | Solve | Medium | | |
| 775. Global and Local Inversions | | | Solve | Medium | | |
| 776. Split BST | | | Solve | Medium | | |
| 777. Swap Adjacent in LR String | | | Solve | Medium | | |
| 787. Cheapest Flights Within K Stops | | | Solve | Medium | | |
| 788. Rotated Digits | | | Solve | Medium | | |
| 789. Escape The Ghosts | | | Solve | Medium | | |
| 790. Domino and Tromino Tiling | | | Solve | Medium | | |
| 792. Number of Matching Subsequences | | | Solve | Medium | | |
| 794. Valid Tic-Tac-Toe State | | | Solve | Medium | | |
| 797. All Paths From Source to Target | | | Solve | Medium | | |
| 799. Champagne Tower | | | Solve | Medium | | |
| 807. Max Increase to Keep City Skyline | | | Solve | Medium | | |
| 808. Soup Servings | | | Solve | Medium | | |
| 809. Expressive Words | | | Solve | Medium | | |
| 813. Largest Sum of Averages | | | Solve | Medium | | |
| 816. Ambiguous Coordinates | | | Solve | Medium | | |
| 817. Linked List Components | | | Solve | Medium | | |
| 833. Find And Replace in String | | | Solve | Medium | | |
| 835. Image Overlap | | | Solve | Medium | | |
| 837. New 21 Game | | | Solve | Medium | | |
| 840. Magic Squares In Grid | | | Solve | Medium | | |
| 845. Longest Mountain in Array | | | Solve | Medium | | |
| 846. Hand of Straights | | | Solve | Medium | | |
| 849. Maximize Distance to Closest Person | | | Solve | Medium | | |
| 852. Peak Index in a Mountain Array | | | Solve | Medium | | |
| 853. Car Fleet | | | Solve | Medium | | |
| 855. Exam Room | | | Solve | Medium | | |
| 863. All Nodes Distance K in Binary Tree | | | Solve | Medium | | |