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Kth Largest Element in an Array
Binary search is the tool here, but the real test is whether your invariant stays crisp. Interviewers love it because it reveals your boundary precision and your edge-case discipline. If you can state the invariant for your search space, you'll stop making off-by-one mistakes.
Meet Allison & Tim
Your AI coaches
Practice coding interviews out loud with real-time voice coaching. Your code actually runs.
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