#include<stdio.h>
#include<conio.h>
void mergeSort(int [], int, int, int);
void partition(int [],int, int);
void main()
{
    int list[50];
    int i, size;

    printf("Enter total number of elements:");
    scanf("%d", &size);

    printf("Enter the elements:\n");
    for(i = 0; i < size; i++)
    {
     scanf("%d", &list[i]);
    }

    partition(list, 0, size - 1);

    printf("After merge sort:\n");
    for(i = 0;i < size; i++)
    {
     printf("%d   ",list[i]);
    }

    getch();
}
void partition(int list[],int low,int high)
{
    int mid;
    if(low < high)
    {
        mid = (low + high) / 2;
        partition(list, low, mid);
        partition(list, mid + 1, high);
        mergeSort(list, low, mid, high);
    }
}
void mergeSort(int list[],int low,int mid,int high)
{
    int i, mi, k, lo, temp[50];
    lo = low;
    i = low;
    mi = mid + 1;
    while ((lo <= mid) && (mi <= high))
    {
    if (list[lo] <= list[mi])
        {
        temp[i] = list[lo];
        lo++;
        }
    else
    {
        temp[i] = list[mi];
        mi++;
    }
    i++;
    }
    if (lo > mid)
    {
    for (k = mi; k <= high; k++)
    {
        temp[i] = list[k];
        i++;
    }
    }
    else
    {
    for (k = lo; k <= mid; k++)
    {
         temp[i] = list[k];
         i++;
    }
    }

    for (k = low; k <= high; k++)
    {
    list[k] = temp[k];
    }
}