| 532. K-diff Pairs in an Array | | | Solve | Medium | | |
| 539. Minimum Time Difference | | | Solve | Medium | | |
| 561. Array Partition | | | Solve | Easy | | |
| 581. Shortest Unsorted Continuous Subarray | | | Solve | Medium | | |
| 588. Design In-Memory File System | | | Solve | Hard | | |
| 594. Longest Harmonious Subsequence | | | Solve | Easy | | |
| 611. Valid Triangle Number | | | Solve | Medium | | |
| 621. Task Scheduler | | | Solve | Medium | | |
| 628. Maximum Product of Three Numbers | | | Solve | Easy | | |
| 630. Course Schedule III | | | Solve | Hard | | |
| 632. Smallest Range Covering Elements from K Lists | | | Solve | Hard | | |
| 642. Design Search Autocomplete System | | | Solve | Hard | | |
| 645. Set Mismatch | | | Solve | Easy | | |
| 646. Maximum Length of Pair Chain | | | Solve | Medium | | |
| 658. Find K Closest Elements | | | Solve | Medium | | |
| 692. Top K Frequent Words | | | Solve | Medium | | |
| 710. Random Pick with Blacklist | | | Solve | Hard | | |
| 719. Find K-th Smallest Pair Distance | | | Solve | Hard | | |
| 720. Longest Word in Dictionary | | | Solve | Medium | | |
| 721. Accounts Merge | | | Solve | Medium | | |
| 726. Number of Atoms | | | Solve | Hard | | |
| 747. Largest Number At Least Twice of Others | | | Solve | Easy | | |
| 757. Set Intersection Size At Least Two | | | Solve | Hard | | |
| 759. Employee Free Time | | | Solve | Hard | | |
| 767. Reorganize String | | | Solve | Medium | | |
| 768. Max Chunks To Make Sorted II | | | Solve | Hard | | |
| 769. Max Chunks To Make Sorted | | | Solve | Medium | | |
| 786. K-th Smallest Prime Fraction | | | Solve | Medium | | |
| 791. Custom Sort String | | | Solve | Medium | | |
| 792. Number of Matching Subsequences | | | Solve | Medium | | |
| 823. Binary Trees With Factors | | | Solve | Medium | | |
| 825. Friends Of Appropriate Ages | | | Solve | Medium | | |
| 826. Most Profit Assigning Work | | | Solve | Medium | | |
| 833. Find And Replace in String | | | Solve | Medium | | |
| 846. Hand of Straights | | | Solve | Medium | | |
| 853. Car Fleet | | | Solve | Medium | | |
| 857. Minimum Cost to Hire K Workers | | | Solve | Hard | | |
| 869. Reordered Power of 2 | | | Solve | Medium | | |
| 870. Advantage Shuffle | | | Solve | Medium | | |
| 881. Boats to Save People | | | Solve | Medium | | |
| 888. Fair Candy Swap | | | Solve | Easy | | |
| 891. Sum of Subsequence Widths | | | Solve | Hard | | |
| 893. Groups of Special-Equivalent Strings | | | Solve | Medium | | |
| 899. Orderly Queue | | | Solve | Hard | | |
| 905. Sort Array By Parity | | | Solve | Easy | | |
| 910. Smallest Range II | | | Solve | Medium | | |
| 912. Sort an Array | | | Solve | Medium | | |
| 922. Sort Array By Parity II | | | Solve | Easy | | |
| 923. 3Sum With Multiplicity | | | Solve | Medium | | |
| 937. Reorder Data in Log Files | | | Solve | Medium | | |
