Wissen Technology
11 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Longest Consecutive Sequence | Medium | 100% | TopicsArrayHash TableUnion-Find |
| 3. Longest Substring Without Repeating Characters | Medium | 100% | TopicsHash TableStringSliding Window |
| 36. Valid Sudoku | Medium | 100% | TopicsArrayHash TableMatrix |
| 76. Minimum Window Substring | Hard | 100% | TopicsHash TableStringSliding Window |
| 3Sum | Medium | 100% | TopicsArrayTwo PointersSorting |
| Remove Duplicates from Sorted Array II | Medium | 100% | TopicsArrayTwo Pointers |
| 54. Spiral Matrix | Medium | 100% | TopicsArrayMatrixSimulation |
| Remove Duplicates from Sorted Array | Easy | 100% | TopicsArrayTwo Pointers |
| 74. Search a 2D Matrix | Medium | 88% | TopicsArrayBinary SearchMatrix |
| 451. Sort Characters By Frequency | Medium | 88% | TopicsHash TableStringSortingHeap (Priority Queue)Bucket SortCounting |
| 49. Group Anagrams | Medium | 88% | TopicsArrayHash TableStringSorting |
