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Medium · O(n log n) avg, O(n²) worst

Quick Sort quiz

Pick an answer to see whether it's right, and why. Nothing is saved or sent.

Question 1 of 10

  1. Question 1: current
  2. Question 2: not answered yet
  3. Question 3: not answered yet
  4. Question 4: not answered yet
  5. Question 5: not answered yet
  6. Question 6: not answered yet
  7. Question 7: not answered yet
  8. Question 8: not answered yet
  9. Question 9: not answered yet
  10. Question 10: not answered yet

This quick sort picks its pivot as the median of three. Which value is the pivot for [7, 2, 9, 4, 3, 8, 1]?

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Take it further

  • AnimationSorting

    Quick Sort Animation

    Quick sort, step by step: the pivot, Hoare's two pointers and a call stack that stays shallow

    Free