Huawei
13 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 2617. Minimum Number of Visited Cells in a Grid | Hard | 100% | TopicsArrayDynamic ProgrammingStackBreadth-First SearchUnion-FindHeap (Priority Queue)MatrixMonotonic Stack |
| 1702. Maximum Binary String After Change | Medium | 100% | TopicsStringGreedy |
| 1. Two Sum | Easy | 76.3% | TopicsArrayHash Table |
| 20. Valid Parentheses | Easy | 76.3% | TopicsStringStackBracket Sequences |
| 300. Longest Increasing Subsequence | Medium | 76.3% | TopicsArrayBinary SearchDynamic ProgrammingLongest Increasing Subsequence |
| 200. Number of Islands | Medium | 66.5% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix |
| 22. Generate Parentheses | Medium | 66.5% | TopicsStringDynamic ProgrammingBacktrackingBracket Sequences |
| 5. Longest Palindromic Substring | Medium | 66.5% | TopicsTwo PointersStringDynamic ProgrammingManacher |
| 51. N-Queens | Hard | 66.5% | TopicsArrayBacktrackingAlgorithm X |
| 42. Trapping Rain Water | Hard | 66.5% | TopicsArrayTwo PointersDynamic ProgrammingStackMonotonic Stack |
| 141. Linked List Cycle | Easy | 66.5% | TopicsHash TableLinked ListTwo PointersFloyd's Cycle Finding Algorithm |
| 347. Top K Frequent Elements | Medium | 66.5% | TopicsArrayHash TableDivide and ConquerSortingHeap (Priority Queue)Bucket SortCountingQuickselect |
| 136. Single Number | Easy | 66.5% | TopicsArrayBit Manipulation |
