| 378. Kth Smallest Element in a Sorted Matrix | | | Solve | Medium | | |
| 380. Insert Delete GetRandom O(1) | | | Solve | Medium | | |
| 384. Shuffle an Array | | | Solve | Medium | | |
| 386. Lexicographical Numbers | | | Solve | Medium | | |
| 394. Decode String | | | Solve | Medium | | |
| 399. Evaluate Division | | | Solve | Medium | | |
| 417. Pacific Atlantic Water Flow | | | Solve | Medium | | |
| 424. Longest Repeating Character Replacement | | | Solve | Medium | | |
| 427. Construct Quad Tree | | | Solve | Medium | | |
| 428. Serialize and Deserialize N-ary Tree | | | Solve | Hard | | |
| 438. Find All Anagrams in a String | | | Solve | Medium | | |
| 445. Add Two Numbers II | | | Solve | Medium | | |
| 446. Arithmetic Slices II - Subsequence | | | Solve | Hard | | |
| 465. Optimal Account Balancing | | | Solve | Hard | | |
| 496. Next Greater Element I | | | Solve | Easy | | |
| 502. IPO | | | Solve | Hard | | |
| 518. Coin Change II | | | Solve | Medium | | |
| 528. Random Pick with Weight | | | Solve | Medium | | |
| 529. Minesweeper | | | Solve | Medium | | |
| 532. K-diff Pairs in an Array | | | Solve | Medium | | |
| 542. 01 Matrix | | | Solve | Medium | | |
| 546. Remove Boxes | | | Solve | Hard | | |
| 547. Number of Provinces | | | Solve | Medium | | |
| 557. Reverse Words in a String III | | | Solve | Easy | | |
| 564. Find the Closest Palindrome | | | Solve | Hard | | |
| 570. Managers with at Least 5 Direct Reports | | | Solve | Medium | | |
| 584. Find Customer Referee | | | Solve | Easy | | |
| 586. Customer Placing the Largest Number of Orders | | | Solve | Easy | | |
| 607. Sales Person | | | Solve | Easy | | |
| 617. Merge Two Binary Trees | | | Solve | Easy | | |
| 621. Task Scheduler | | | Solve | Medium | | |
| 626. Exchange Seats | | | Solve | Medium | | |
| 646. Maximum Length of Pair Chain | | | Solve | Medium | | |
| 653. Two Sum IV - Input is a BST | | | Solve | Easy | | |
| 658. Find K Closest Elements | | | Solve | Medium | | |
| 682. Baseball Game | | | Solve | Easy | | |
| 692. Top K Frequent Words | | | Solve | Medium | | |
| 699. Falling Squares | | | Solve | Hard | | |
| 704. Binary Search | | | Solve | Easy | | |
| 706. Design HashMap | | | Solve | Easy | | |
| 710. Random Pick with Blacklist | | | Solve | Hard | | |
| 715. Range Module | | | Solve | Hard | | |
| 722. Remove Comments | | | Solve | Medium | | |
| 725. Split Linked List in Parts | | | Solve | Medium | | |
| 729. My Calendar I | | | Solve | Medium | | |
| 731. My Calendar II | | | Solve | Medium | | |
| 733. Flood Fill | | | Solve | Easy | | |
| 739. Daily Temperatures | | | Solve | Medium | | |
| 741. Cherry Pickup | | | Solve | Hard | | |
| 746. Min Cost Climbing Stairs | | | Solve | Easy | | |
