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Computer Science

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  • $\begingroup$ What is the Quicksort that you all know and love? $\endgroup$ Commented Jan 14, 2017 at 22:38
  • $\begingroup$ Partitioning starts both at the left and the right, until it finds an element > pivot on the left, and an element < pivot on the right, and exchanges them. $\endgroup$ Commented Jan 15, 2017 at 9:33
  • $\begingroup$ And typically you wouldn't take the first or last element the pivot, because that makes sorts and reverse sorted take quadratic time. $\endgroup$ Commented Jan 15, 2017 at 21:58