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Problem
Given an array of integers, sort the array using the Quick Sort algorithm. The implementation must include a robust partitioning scheme (e.g., Lomuto or Hoare) and handle recursion effectively.
Reading the solution first feels like progress, but it makes the next similar problem — and the interview version — much harder, because you skipped the part where you figure it out. Give it an honest 20–30 minutes. Stuck? Re-read the pattern, watch the concept video, or try the brute force first.
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