Insertion sort in c: c program for insertion sort to sort numbers. This code implements insertion sort algorithm to arrange numbers of an array in ascending order. With a little modification it will arrange numbers in descending order.
Insertion sort algorithm implementation in c
/* insertion sort ascending order */
#include<stdio.h>
main()
{
int array[100], n, c, d, swap, k;
printf("Enter number of elements\n");
scanf("%d", &n);
printf("Enter %d integers\n", n);
for ( c = 0 ; c < n ; c++ )
scanf("%d", &array[c]);
for ( c = 1 ; c <= n - 1 ; c++ )
{
for ( d = 0 ; d <= c - 1 ; d++ )
{
if ( array[c] < array[d] )
{
swap = array[d];
array[d] = array[c];
for ( k = c ; k > d ; k-- )
array[k] = array[k-1];
array[k+1] = swap;
}
}
}
printf("Sorted list in ascending order:\n");
for ( c = 0 ; c < n ; c++ )
printf("%d\n", array[c]);
return 0;
}
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