Merge Sort in C - Merge Sort using C Program



 merge sort using c program

Learn C - C tutorial - merge sort using c program - C examples - C programs

Merge Sort using C Program

  • Merge sort is used for sorting numbers, structure, files.
  • Merge sort first divides the array into two halves and then combines them in a sorted manner.

Sample Code

#include <stdio.h>
#define max 7
int a[11] = {10,14,19,26,33,35,44,0};
int b[10];
void merging(int low, int mid, int high)
{
    int l1, l2, i;
    for(l1 = low, l2 = mid + 1, i = low; l1 <= mid && l2 <= high; i++) 
    {
        if(a[l1] <= a[l2])
            b[i] = a[l1++];
        else
            b[i] = a[l2++];
    }
    while(l1 <= mid)
        b[i++] = a[l1++];
    while(l2 <= high)
        b[i++] = a[l2++];
    for(i=low; i <=high; i++)
        a[i] = b[i];
}
void sort(int low, int high)
{
    int mid;
    if(low < high)
    {
        mid = (low + high) / 2;
        sort(low, mid);
        sort(mid+1, high);
        merging(low, mid, high);
    }
    Else
    {
        return;
    }
}
int main()
{
    int i;
    printf("List before sorting\n");
    for(i = 0; i <= max; i++)
        printf("%d ", a[i]);
    sort(0, max);
    printf("\nList after sorting\n");
    for(i = 0; i <= max; i++)
        printf("%d ", a[i]);
}

Output

List before sorting
10 14 19 26 33 35 44 0 
List after sorting
0 10 14 19 26 33 35 44 


View More Quick Examples


Related Searches to Merge Sort in C - Merge Sort using C Program