| 555. Split Concatenated Strings | Solution | Solve | Medium | | |
| 562. Longest Line of Consecutive One in Matrix | Solution | Solve | Medium | | |
| 568. Maximum Vacation Days | Solution | Solve | Hard | | |
| 569. Median Employee Salary | Solution | Solve | Hard | | |
| 571. Find Median Given Frequency of Numbers | Solution | Solve | Hard | | |
| 573. Squirrel Simulation | Solution | Solve | Medium | | |
| 574. Winning Candidate | Solution | Solve | Medium | - | |
| 578. Get Highest Answer Rate Question | Solution | Solve | Medium | | |
| 579. Find Cumulative Salary of an Employee | Solution | Solve | Hard | | |
| 580. Count Student Number in Departments | Solution | Solve | Medium | | |
| 582. Kill Process | Solution | Solve | Medium | | |
| 588. Design In-Memory File System | Solution | Solve | Hard | | |
| 597. Friend Requests I: Overall Acceptance Rate | Solution | Solve | Easy | | |
| 603. Consecutive Available Seats | Solution | Solve | Easy | - | |
| 604. Design Compressed String Iterator | Solution | Solve | Easy | | |
| 612. Shortest Distance in a Plane | Solution | Solve | Medium | | |
| 613. Shortest Distance in a Line | Solution | Solve | Easy | - | |
| 614. Second Degree Follower | Solution | Solve | Medium | - | |
| 615. Average Salary: Departments VS Company | Solution | Solve | Hard | - | |
| 616. Add Bold Tag in String | Solution | Solve | Medium | | |
| 618. Students Report By Geography | Solution | Solve | Hard | - | |
| 625. Minimum Factorization | Solution | Solve | Medium | | |
| 631. Design Excel Sum Formula | Solution | Solve | Hard | | |
| 634. Find the Derangement of An Array | Solution | Solve | Medium | | |
| 635. Design Log Storage System | Solution | Solve | Medium | | |
| 642. Design Search Autocomplete System | Solution | Solve | Hard | | |
| 644. Maximum Average Subarray II | Solution | Solve | Hard | | |
| 651. 4 Keys Keyboard | Solution | Solve | Medium | | |
| 656. Coin Path | Solution | Solve | Hard | | |
| 660. Remove 9 | Solution | Solve | Hard | | |
| 663. Equal Tree Partition | Solution | Solve | Medium | | |
| 666. Path Sum IV | Solution | Solve | Medium | | |
| 681. Next Closest Time | Solution | Solve | Medium | | |
| 683. K Empty Slots | Solution | Solve | Hard | | |
| 694. Number of Distinct Islands | Solution | Solve | Medium | | |
| 702. Search in a Sorted Array of Unknown Size | Solution | Solve | Medium | | |
| 708. Insert into a Sorted Circular Linked List | Solution | Solve | Medium | | |
| 711. Number of Distinct Islands II | Solution | Solve | Hard | | |
| 716. Max Stack | Solution | Solve | Hard | | |
| 723. Candy Crush | Solution | Solve | Medium | | |
| 727. Minimum Window Subsequence | Solution | Solve | Hard | | |
| 734. Sentence Similarity | Solution | Solve | Easy | | |
| 737. Sentence Similarity II | Solution | Solve | Medium | | |
| 742. Closest Leaf in a Binary Tree | Solution | Solve | Medium | | |
| 750. Number Of Corner Rectangles | Solution | Solve | Medium | | |
| 751. IP to CIDR | Solution | Solve | Medium | | |
| 755. Pour Water | Solution | Solve | Medium | | |
| 758. Bold Words in String | Solution | Solve | Medium | | |
| 759. Employee Free Time | Solution | Solve | Hard | | |
| 760. Find Anagram Mappings | Solution | Solve | Easy | | |
