| 42. Trapping Rain Water | | | Solve | Hard | | |
| 84. Largest Rectangle in Histogram | | | Solve | Hard | | |
| 85. Maximal Rectangle | | | Solve | Hard | | |
| 255. Verify Preorder Sequence in Binary Search Tree | | | Solve | Medium | | |
| 316. Remove Duplicate Letters | | | Solve | Medium | | |
| 321. Create Maximum Number | | | Solve | Hard | | |
| 402. Remove K Digits | | | Solve | Medium | | |
| 456. 132 Pattern | | | Solve | Medium | | |
| 496. Next Greater Element I | | | Solve | Easy | | |
| 503. Next Greater Element II | | | Solve | Medium | | |
| 581. Shortest Unsorted Continuous Subarray | | | Solve | Medium | | |
| 654. Maximum Binary Tree | | | Solve | Medium | | |
| 739. Daily Temperatures | | | Solve | Medium | | |
| 768. Max Chunks To Make Sorted II | | | Solve | Hard | | |
| 769. Max Chunks To Make Sorted | | | Solve | Medium | | |
| 853. Car Fleet | | | Solve | Medium | | |
| 901. Online Stock Span | | | Solve | Medium | | |
| 907. Sum of Subarray Minimums | | | Solve | Medium | | |
| 962. Maximum Width Ramp | | | Solve | Medium | | |
| 975. Odd Even Jump | | | Solve | Hard | | |
| 1008. Construct Binary Search Tree from Preorder Traversal | | | Solve | Medium | | |
| 1019. Next Greater Node In Linked List | | | Solve | Medium | | |
| 1063. Number of Valid Subarrays | | | Solve | Hard | | |
| 1081. Smallest Subsequence of Distinct Characters | | | Solve | Medium | | |
| 1124. Longest Well-Performing Interval | | | Solve | Medium | | |
| 1130. Minimum Cost Tree From Leaf Values | | | Solve | Medium | | |
| 1475. Final Prices With a Special Discount in a Shop | | | Solve | Easy | | |
| 1504. Count Submatrices With All Ones | | | Solve | Medium | | |
| 1526. Minimum Number of Increments on Subarrays to Form a Target Array | | | Solve | Hard | | |
| 1574. Shortest Subarray to be Removed to Make Array Sorted | | | Solve | Medium | | |
| 1673. Find the Most Competitive Subsequence | | | Solve | Medium | | |
| 1762. Buildings With an Ocean View | | | Solve | Medium | | |
| 1776. Car Fleet II | | | Solve | Hard | | |
| 1793. Maximum Score of a Good Subarray | | | Solve | Hard | | |
| 1856. Maximum Subarray Min-Product | | | Solve | Medium | | |
| 1944. Number of Visible People in a Queue | | | Solve | Hard | | |
| 1950. Maximum of Minimum Values in All Subarrays | | | Solve | Medium | | |
| 1996. The Number of Weak Characters in the Game | | | Solve | Medium | | |
| 2030. Smallest K-Length Subsequence With Occurrences of a Letter | | | Solve | Hard | | |
| 2104. Sum of Subarray Ranges | | | Solve | Medium | | |
| 2281. Sum of Total Strength of Wizards | | | Solve | Hard | | |
| 2282. Number of People That Can Be Seen in a Grid | | | Solve | Medium | | |
| 2289. Steps to Make Array Non-decreasing | | | Solve | Medium | | |
| 2297. Jump Game VIII | | | Solve | Medium | | |
| 2334. Subarray With Elements Greater Than Varying Threshold | | | Solve | Hard | | |
| 2345. Finding the Number of Visible Mountains | | | Solve | Medium | | |
| 2355. Maximum Number of Books You Can Take | | | Solve | Hard | | |
| 2454. Next Greater Element IV | | | Solve | Hard | - | |
| 2487. Remove Nodes From Linked List | | | Solve | Medium | | |
| 2617. Minimum Number of Visited Cells in a Grid | | | Solve | Hard | | |
