This C code uses the merge sort algorithm to sort source code

This snippet submitted by Abhishek H.Dwivedi on 2005-02-15. It has been viewed 39449 times.
Rating of 5.5 with 667 votes

  
 #include<stdio.h>
#include<conio.h>
int j,a[15],i,temp,n;
void main()
{
clrscr();
void createheap(int);
printf(\"Enter number of elements\n(Not more than 15) \");
scanf(\"%d\",&n);
for(i=1;i<=n;i++)
scanf(\"%d\",&a[i]);
for(i=n;i>=2;i--)
createheap(i);
for(i=n-1;i>=1;i--)
{
temp=a[1];
a[1]=a[i+1];
a[i+1]=temp;
for(j=i;j>=2;j--)
createheap(j);
}
printf(\"The sorted elements are :\n\");
for(i=1;i<=n;i++)
printf(\"%d \",a[i]);
getch();
}
void createheap(int y)
{
if(y>1)
{
if(a[y]>a[y/2])
{
temp=a[y];
a[y]=a[y/2];
a[y/2]=temp;
createheap(y/2);
}}}
 




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