| 349 | Intersection of Two Arrays | Easy |
| 350 | Intersection of Two Arrays II | Easy |
| 354 | Russian Doll Envelopes | Hard |
| 363 | Max Sum of Rectangle No Larger Than K | Hard |
| 368 | Largest Divisible Subset | Medium |
| 373 | Find K Pairs with Smallest Sums | Medium |
| 376 | Wiggle Subsequence | Medium |
| 380 | Insert Delete GetRandom O(1) | Medium |
| 381 | Insert Delete GetRandom O(1) - Duplicates allowed | Hard |
| 384 | Shuffle an Array | Medium |
| 391 | Perfect Rectangle | Hard |
| 393 | UTF-8 Validation | Medium |
| 396 | Rotate Function | Medium |
| 399 | Evaluate Division | Medium |
| 403 | Frog Jump | Hard |
| 406 | Queue Reconstruction by Height | Medium |
| 407 | Trapping Rain Water II | Hard |
| 410 | Split Array Largest Sum | Hard |
| 413 | Arithmetic Slices | Medium |
| 414 | Third Maximum Number | Easy |
| 416 | Partition Equal Subset Sum | Medium |
| 417 | Pacific Atlantic Water Flow | Medium |
| 419 | Battleships in a Board | Medium |
| 421 | Maximum XOR of Two Numbers in an Array | Medium |
| 427 | Construct Quad Tree | Medium |
| 435 | Non-overlapping Intervals | Medium |
| 436 | Find Right Interval | Medium |
| 442 | Find All Duplicates in an Array | Medium |
| 446 | Arithmetic Slices II - Subsequence | Hard |
| 447 | Number of Boomerangs | Medium |