快速排序,gcc亲测能用

#include<stdio.h>

void quick_sort(int a[],int left,int right)
{
int l = left;
int r = right;
int n = a[left];
if(left >= right)
return;
while(l<r)
{
while(l<r && a[r]>=n)
r--;
a[l]=a[r];
while(l<r && a[l]<=n)
l++;
a[r]=a[l];
}
a[l]=n;
quick_sort(a,left,l-1);
quick_sort(a,l+1,right);
}

int main()
{
int a[5]={5,4,3,2,1};
int i=0;
quick_sort(a,0,4);
for(i=0; i<5; i++)
{
printf("%d>>",a[i]);
}
printf("\n");
return 0;
}