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Bit Manipulation
XOR tricks, bitmasks, counting bits, and power-of-two checks for low-level optimization.
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Bit ManipulationBeginnerIntermediateAdvancedQuestions: 1–5
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What You'll Practice (4 techniques)
XOR patternsBitmask DPBrian Kernighan'sSingle number
Prerequisites
Binary number system
Difficulty Levels
Beginner
Core pattern recognition, fundamental approach.
Intermediate
Pattern variations, edge cases, optimization.
Advanced
Complex combinations, merge multiple patterns.