| 218 | The Skyline Problem | Hard |
| 220 | Contains Duplicate III | Medium |
| 315 | Count of Smaller Numbers After Self | Hard |
| 352 | Data Stream as Disjoint Intervals | Hard |
| 363 | Max Sum of Rectangle No Larger Than K | Hard |
| 456 | 132 Pattern | Medium |
| 493 | Reverse Pairs | Hard |
| 497 | Random Point in Non-overlapping Rectangles | Medium |
| 699 | Falling Squares | Hard |
| 715 | Range Module | Hard |
| 731 | My Calendar II | Medium |
| 732 | My Calendar III | Hard |
| 850 | Rectangle Area II | Hard |
| 855 | Exam Room | Medium |
| 895 | Maximum Frequency Stack | Hard |
| 975 | Odd Even Jump | Hard |
| 1348 | Tweet Counts Per Frequency | Medium |
| 1418 | Display Table of Food Orders in a Restaurant | Medium |
| 1438 | Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit | Medium |
| 1606 | Find Servers That Handled Most Number of Requests | Hard |
| 1649 | Create Sorted Array through Instructions | Hard |
| 1675 | Minimize Deviation in Array | Hard |
| 1818 | Minimum Absolute Sum Difference | Medium |
| 1825 | Finding MK Average | Hard |
| 1912 | Design Movie Rental System | Hard |
| 1942 | The Number of the Smallest Unoccupied Chair | Medium |
| 2034 | Stock Price Fluctuation | Medium |
| 2035 | Partition Array Into Two Arrays to Minimize Sum Difference | Hard |
| 2102 | Sequentially Ordinal Rank Tracker | Hard |
| 2179 | Count Good Triplets in an Array | Hard |