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1396 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 1108. Defanging an IP Address | Easy | 31.8% | TopicsString |
| Average Selling Price | Easy | 31.8% | TopicsDatabase |
| 1480. Running Sum of 1d Array | Easy | 31.8% | TopicsArrayPrefix Sum |
| 1662. Check If Two String Arrays are Equivalent | Easy | 31.8% | TopicsArrayString |
| Monthly Transactions I | Medium | 31.8% | TopicsDatabase |
| 115. Distinct Subsequences | Hard | 31.8% | TopicsStringDynamic Programming |
| Unique Binary Search Trees II | Medium | 30.5% | TopicsDynamic ProgrammingBacktrackingTreeBinary Search TreeBinary Tree |
| Convert Sorted Array to Binary Search Tree | Easy | 30.5% | TopicsArrayDivide and ConquerTreeBinary Search TreeBinary Tree |
| Employees Earning More Than Their Managers | Easy | 30.5% | TopicsDatabase |
| Maximal Square | Medium | 30.5% | TopicsArrayDynamic ProgrammingMatrix |
| 226. Invert Binary Tree | Easy | 30.5% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
| 404. Sum of Left Leaves | Easy | 30.5% | TopicsTreeDepth-First SearchBreadth-First SearchBinary Tree |
| 412. Fizz Buzz | Easy | 30.5% | TopicsMathStringSimulation |
| Managers with at Least 5 Direct Reports | Medium | 30.5% | TopicsDatabase |
| 785. Is Graph Bipartite? | Medium | 30.5% | TopicsDepth-First SearchBreadth-First SearchUnion-FindGraph TheoryGraph ColoringBipartite Graph |
| 989. Add to Array-Form of Integer | Easy | 30.5% | TopicsArrayMath |
| 1266. Minimum Time Visiting All Points | Easy | 30.5% | TopicsArrayMathGeometry |
| 1922. Count Good Numbers | Medium | 30.5% | TopicsMathRecursion |
| Triangle | Medium | 30.5% | TopicsArrayDynamic Programming |
| Students and Examinations | Easy | 30.5% | TopicsDatabase |
| 225. Implement Stack using Queues | Easy | 30.5% | TopicsStackDesignQueue |
| 37. Sudoku Solver | Hard | 29.1% | TopicsArrayHash TableBacktrackingMatrixAlgorithm XDancing Links |
| Minimum Path Sum | Medium | 29.1% | TopicsArrayDynamic ProgrammingMatrix |
| 105. Construct Binary Tree from Preorder and Inorder Traversal | Medium | 29.1% | TopicsArrayHash TableDivide and ConquerTreeBinary Tree |
| 113. Path Sum II | Medium | 29.1% | TopicsBacktrackingTreeDepth-First SearchBinary Tree |
