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Based onLeetCode
mediumBlind 75
Time Based Key-Value Store
Time Based Key-Value Store rewards precision: narrowing the search space correctly is the whole game. Interviewers love it because it reveals your boundary precision and your edge-case discipline. The trap is boundary drift—one wrong low/high update can loop forever or skip the answer.
Arrays & HashingBinary SearchDesign
👩🏫
👨💼
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
1Simple Cacheeasy
2Part 2
3Part 3
Start Part 1 to unlock your next challenge
Based onLeetCode
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