CrowdStrike
12 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 443. String Compression | Medium | 100% | TopicsTwo PointersString |
| 200. Number of Islands | Medium | 97.2% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix |
| Encode and Decode Strings | Medium | 90.5% | TopicsArrayStringDesign |
| 56. Merge Intervals | Medium | 74.3% | TopicsArraySortingQuicksort |
| 981. Time Based Key-Value Store | Medium | 64.9% | TopicsHash TableStringBinary SearchDesign |
| 42. Trapping Rain Water | Hard | 64.9% | TopicsArrayTwo PointersDynamic ProgrammingStackMonotonic Stack |
| 977. Squares of a Sorted Array | Easy | 64.9% | TopicsArrayTwo PointersSorting |
| 207. Course Schedule | Medium | 64.9% | TopicsDepth-First SearchBreadth-First SearchGraph TheoryTopological SortDirected Acyclic Graph |
| 20. Valid Parentheses | Easy | 64.9% | TopicsStringStackBracket Sequences |
| 133. Clone Graph | Medium | 64.9% | TopicsHash TableDepth-First SearchBreadth-First SearchGraph Theory |
| 49. Group Anagrams | Medium | 64.9% | TopicsArrayHash TableStringSorting |
| 3815. Design Auction System | Medium | 64.9% | TopicsHash TableDesignHeap (Priority Queue)Ordered Set |
