Box
7 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 692. Top K Frequent Words | Medium | 100% | TopicsArrayHash TableStringTrieSortingHeap (Priority Queue)Bucket SortCounting |
| 191. Number of 1 Bits | Easy | 88.8% | TopicsDivide and ConquerBit Manipulation |
| Rotate Array | Medium | 88.8% | TopicsArrayMathTwo Pointers |
| 684. Redundant Connection | Medium | 77.1% | TopicsDepth-First SearchBreadth-First SearchUnion-FindGraph Theory |
| 127. Word Ladder | Hard | 71.1% | TopicsHash TableStringBreadth-First SearchBidirectional Search |
| 965. Univalued Binary Tree | Easy | 62.7% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
| Word Ladder II | Hard | 62.7% | TopicsHash TableStringBacktrackingBreadth-First SearchBidirectional Search |
