60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
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/*
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* C Program to Perform Quick Sort on a set of Entries from a File
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* using Recursion
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*/
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#include <stdio.h>
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void quicksort (int [], int, int);
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int main()
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{
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int list[50];
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int size, i;
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printf("Enter the number of elements: ");
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scanf("%d", &size);
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printf("Enter the elements to be sorted:\n");
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for (i = 0; i < size; i++)
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{
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scanf("%d", &list[i]);
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}
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quicksort(list, 0, size - 1);
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printf("After applying quick sort\n");
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for (i = 0; i < size; i++)
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{
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printf("%d ", list[i]);
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}
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printf("\n");
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return 0;
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}
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void quicksort(int list[], int low, int high)
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{
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int pivot, i, j, temp;
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if (low < high)
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{
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pivot = low;
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i = low;
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j = high;
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while (i < j)
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{
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while (list[i] <= list[pivot] && i <= high)
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{
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i++;
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}
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while (list[j] > list[pivot] && j >= low)
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{
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j--;
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}
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if (i < j)
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{
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temp = list[i];
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list[i] = list[j];
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list[j] = temp;
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}
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}
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temp = list[j];
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list[j] = list[pivot];
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list[pivot] = temp;
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quicksort(list, low, j - 1);
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quicksort(list, j + 1, high);
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}
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}
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