Practice problems across 75+ categories
Practice problems frequently asked at Google • 3407 problems | 851 Easy | 1775 Medium | 761 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 331 | Circle and Rectangle Overlapping | Hard | MathGeometry |
| 332 | Circular Array Loop | Medium | ArrayHash TableTwo Pointers |
| 333 | Circular Permutation in Binary Representation | Medium | MathBacktrackingBit Manipulation |
| 334 | Circular Sentence | Easy | String |
| 335 | Class Performance | Medium | Database |
| 336 | Classes With at Least 5 Students | Easy | Database |
| 337 | Classifying Triangles by Lengths | Easy | Database |
| 338 | Clear Digits | Easy | StringStackSimulation |
| 339 | Climbing Stairs | Easy | MathDynamic ProgrammingMemoization |
| 340 | Clone Binary Tree With Random Pointer | Medium | Hash TableTreeDepth-First Search |
| 341 | Clone Graph | Medium | Hash TableDepth-First SearchBreadth-First Search |
| 342 | Clone N-ary Tree | Medium | Hash TableTreeDepth-First Search |
| 343 | Closest Binary Search Tree Value | Easy | Binary SearchTreeDepth-First Search |
| 344 | Closest Binary Search Tree Value II | Hard | Two PointersStackTree |
| 345 | Closest Dessert Cost | Medium | ArrayDynamic ProgrammingBacktracking |
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