| ID | Title | Difficulty |
|---|---|---|
| 4 | Median of Two Sorted Arrays | Hard |
| 23 | Merge k Sorted Lists | Hard |
| 53 | Maximum Subarray | Easy |
| 169 | Majority Element | Easy |
| 191 | Number of 1 Bits | Easy |
| 215 | Kth Largest Element in an Array | Medium |
| 240 | Search a 2D Matrix II | Medium |
| 315 | Count of Smaller Numbers After Self | Hard |
| 654 | Maximum Binary Tree | Medium |