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Cod sursa(job #272203)
#include<fstream.h>
#define dim 500001
int a[dim],n,k;
void poz(int li, int ls, int &k)
{int i=li,j=ls,c,i1=0,j1=-1;
while(i<j)
{
if(a[i]>a[j])
{c=a[j];
a[j]=a[i];
a[i]=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);
quick(li,k-1);
quick(k+1,ls);
}
}
int main()
{
ifstream f("algsort.in");
ofstream g("algsort.out");
int i;
f>>n;
for(i=1;i<=n;i++)
f>>a[i];
quick(1,n);
for(i=1;i<=n;i++)
g<<a[i]<<" ";
g<<'\n';
f.close();
g.close();
return 0;
}