Practice problems across 75+ categories
Practice coding problems across all companies and topics • 3600 problems | 879 Easy | 1856 Medium | 842 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 3886 | HMAC Implementation | Hard | CryptographyHashingAuthentication |
| 3887 | Password Hasher with Salt | Hard | CryptographyHashingRandom |
| 3888 | Digital Signature Simulator | Hard | CryptographyRSAHashing |
| 3889 | One-Time Pad Cipher | Hard | CryptographyXORRandom |
| 3890 | Zero-Knowledge Proof Demo | Hard | CryptographyMathProtocol |
| 3891 | LZ77 Compression | Hard | CompressionStringSliding Window |
| 3892 | Run-Length Encoding for Images | Hard | Compression2D ArrayEncoding |
| 3893 | Minimax Game AI | Hard | Game TheoryRecursionAlpha-Beta |
| 3894 | Monte Carlo Tree Search | Hard | Game TheoryTreeProbability |
| 3895 | MapReduce Framework | Hard | Distributed SystemsConcurrencyPartitioning |
| 3896 | Raft Consensus Simulator | Hard | Distributed SystemsState MachineProtocol |
| 3897 | Build Order with Parallel Execution | Hard | Advanced AlgorithmsGraphTopological Sort |
| 3898 | Concurrent Skip List | Hard | ConcurrencySkip ListLock-Free |
| 3899 | Custom Allocator with Coalescing | Hard | System DesignMemoryFree List |
| 3900 | Database Query Optimizer | Hard | System DesignTreeCost Model |
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