Implementing Quicksort programs

  • Authors:
  • Robert Sedgewick

  • Affiliations:
  • Brown Univ., Providence, RI

  • Venue:
  • Communications of the ACM
  • Year:
  • 1978

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Abstract

This paper is a practical study of how to implement the Quicksort sorting algorithm and its best variants on real computers, including how to apply various code optimization techniques. A detailed implementation combining the most effective improvements to Quicksort is given, along with a discussion of how to implement it in assembly language. Analytic results describing the performance of the programs are summarized. A variety of special situations are considered from a practical standpoint to illustrate Quicksort's wide applicability as an internal sorting method which requires negligible extra storage.