Starting Out with C++ from Control Structures to Objects, Student Value Edition (9th Edition)
Starting Out with C++ from Control Structures to Objects, Student Value Edition (9th Edition)
9th Edition
ISBN: 9780134443829
Author: Tony Gaddis
Publisher: PEARSON
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Chapter 20, Problem 3PC
Program Plan Intro

Quick sort template

Program Plan:

Main.cpp

  • Include the required header files.
  • Declare the necessary function prototype and constants.
  • Define the main () function.
    • Declare the necessary variables.
    • Get the required input from the user.
    • Call the method “quickSort()” to perform the sort operation for the given elements.
    • The sorted values are being displayed to the user using a loop.

Quicksort.h

  • Define the template function necessary.
  • Define the method definitions that compares and performs sort operation for the contents of the array using quick sort.
  • Define the method “quickSort()”,
    • Declare the necessary variables.
    • Condition statement that compares the values present at the beginning and at the end.
    • Call the method “partition()” to partition the list.
    • Call the method “quicksort()” to sort the first and second sub lists.
  • Define the method “partition()”,
    • Declare the necessary variables.
    • Calculate the mid value of the list.
    • Call the function to perform necessary swap using “swapVars()”.
    • Use a loop to iterate to validate the values using if condition then perform the necessary swaps by calling the function “swapVars()”.
    • Return the index of the pivot element.
  • Define the  method “swapVars()”,
    • Declare the necessary variables.
    • Assign the temporary variable and perform the necessary swap assignment statements as required.

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