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Based onLeetCode
mediumGrind 75
Permutation in String
Permutation in String is less about the final answer and more about disciplined window bookkeeping. Interviewers love it because it reveals your stateful scanning and your edge-case discipline. Be disciplined about counts and boundaries; most bugs are off-by-one window moves.
Arrays & HashingSliding WindowStringTwo Pointers
👩🏫
👨💼
Meet Allison & Tim
Your AI coaches
Practice coding interviews out loud with real-time voice coaching. Your code actually runs.
Free · No sign up · Early access
1Part 1: Permutation in Stringmedium
2Part 2
3Part 3
Start Part 1 to unlock your next challenge
Based onLeetCode
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