Practice problems across 75+ categories
Practice problems frequently asked at Google • 3407 problems | 851 Easy | 1775 Medium | 761 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1966 | Merge Two Binary Trees | Easy | TreeDepth-First SearchBreadth-First Search |
| 1967 | Merge Two Sorted Lists | Easy | Linked ListRecursion |
| 1968 | Method Chaining | Easy | Database |
| 1969 | Mice and Cheese | Medium | ArrayGreedySorting |
| 1970 | Middle of the Linked List | Easy | Linked ListTwo Pointers |
| 1971 | Min Cost Climbing Stairs | Easy | ArrayDynamic Programming |
| 1972 | Min Cost to Connect All Points | Medium | ArrayUnion FindGraph |
| 1973 | Min Max Game | Easy | ArraySimulation |
| 1974 | Min Stack | Medium | StackDesign |
| 1975 | Minesweeper | Medium | ArrayDepth-First SearchBreadth-First Search |
| 1976 | Mini Parser | Medium | StringStackDepth-First Search |
| 1977 | Minimize Connected Groups by Inserting Interval | Medium | ArrayBinary SearchSliding Window |
| 1978 | Minimize Deviation in Array | Hard | ArrayGreedyHeap (Priority Queue) |
| 1979 | Minimize Hamming Distance After Swap Operations | Medium | ArrayDepth-First SearchUnion Find |
| 1980 | Minimize Length of Array Using Operations | Medium | ArrayMathGreedy |
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