Practice problems across 75+ categories
Practice coding problems across all companies and topics • 3600 problems | 879 Easy | 1856 Medium | 842 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 3301 | Serialize and Deserialize Binary Tree | Hard | StringTreeDepth-First Search |
| 3302 | Serialize and Deserialize BST | Medium | StringTreeDepth-First Search |
| 3303 | Serialize and Deserialize N-ary Tree | Hard | StringTreeDepth-First Search |
| 3304 | Server Utilization Time | Medium | Database |
| 3305 | Set Intersection Size At Least Two | Hard | ArrayGreedySorting |
| 3306 | Set Matrix Zeroes | Medium | ArrayHash TableMatrix |
| 3307 | Set Mismatch | Easy | ArrayHash TableBit Manipulation |
| 3308 | Set Operations Implementer | Medium | SetsSetLogic |
| 3309 | SHA-256 Implementation | Hard | CryptographyHashingBit Operations |
| 3310 | Shift 2D Grid | Easy | ArrayMatrixSimulation |
| 3311 | Shift Distance Between Two Strings | Medium | ArrayStringPrefix Sum |
| 3312 | Shifting Letters | Medium | ArrayStringPrefix Sum |
| 3313 | Shifting Letters II | Medium | ArrayStringPrefix Sum |
| 3314 | Shopping Cart | Easy | Data StructuresList/ArrayStruct |
| 3315 | Shopping Offers | Medium | ArrayDynamic ProgrammingBacktracking |
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