A quick sort program that I wrote using C programming language.
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Program Listing#include <stdio.h> #include <stdlib.h> int Quick_Sort(int *items, int left, int right) { int pivot = left; int i = left +1, j = right, temp; if (left < right) { while (1) { while (items[j] > items[pivot]) j--; while (items[i] <= items[pivot]) i++; if (i < j) { temp = items[i]; items[i] = items[j]; items[j] = temp; } else break; } temp = items[pivot]; items[pivot] = items[j]; items[j] = temp; Quick_Sort(items, left, j-1); Quick_Sort(items, j+1, right); } return 0; } int main() { int a=0,num=0, *items; printf("\n"); printf("\tQuick Sort in C"); printf("\n\n"); printf("\tHow Many Items? : "); scanf("%d", &num); items = (int *)malloc(sizeof (int) * num); printf("\n\n"); for (a = 0; a < num; a++) { printf("\tEnter Value in Item No. %d : ",a+1); scanf("%d", &items[a]); } printf("\n\n"); printf("\tBefore Sorting\n"); printf("\n\n"); printf("\t"); for (a = 0; a < num; a++) printf("%5d",items[a]); printf("\n"); Quick_Sort(items, 0, num-1); printf("\n\n"); printf("\tAfter Sorting:\n"); printf("\n\n"); printf("\t"); for (a= 0; a < num; a++) printf("%5d", items[a]); printf("\n\n"); printf("\tEnd of Program"); printf("\n"); }
