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Cod sursa(job #332379)
#include <stdio.h>
int a[500000];
int r,i,j;
void swap(int& t1, int& t2)
{
int aux = t1;
t1 = t2;
t2 = aux;
}
int pivot(int p,int q)
{
i = p;
for (j=p+1;j<=q;j++)
{
if (a[j]<a[p])
{
i++;
swap(a[i],a[j]);
}
}
swap(a[i],a[p]);
return i;
}
void qsort(int p,int q)
{
if (p<q)
{
r = pivot(p,q);
qsort(p,r-1);
qsort(r+1,q);
}
}
int main()
{
freopen("algsort.in","r",stdin);
freopen("algsort.out","w",stdout);
int n;
scanf("%d",&n);
for (i =0;i<n;i++)
{
scanf("%d",&a[i]);
}
qsort(0,n-1);
for (i=0;i<n;i++)
{
printf("%d ", a[i]);
}
return 0;
}