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Cod sursa(job #378085)
#include<stdlib.h>
#include<cstdio>
using namespace std;
int k,i,j,a[500001];
void poz(int li,int ls,int &k,int a[100])
{int c,i1,j1;
i=li;j=ls;i1=0;j1=-1;
while (i<j)
{
if (a[i]>=a[j])
{
c=a[i];a[i]=a[j];a[j]=c;
c=i1;i1=-j1;j1=-c;
}
i=i+i1;
j=j+j1;
}
k=i;
}
void quick(int li,int ls)
{ if (li<ls)
{
poz(li,ls,k,a);
quick(li,k-1);
quick(k+1,ls);
}
}
int main()
{int n;
freopen("algsort.in","r",stdin);
freopen("algsort.out","w",stdout);
scanf("%d",&n);
for (i=1;i<=n;i++)
scanf("%d",&a[i]);
quick(1,n);
for (i=1;i<=n;i++)
printf("%d ",a[i]);
return 0;
}