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Cod sursa(job #908123)
#include <fstream>
using namespace std;
ifstream f("algsort.in");
ofstream g("algsort.out");
int a[500000],n,k;
void poz(int st, int dr, int &k,int a[100])
{
int i=st,j=dr,c=0,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+=i1;
j+=j1;
}
k=i;
}
void quick(int st, int dr)
{
if(st<dr)
{
poz(st,dr,k,a);
quick(st,k-1);
quick(k+1,dr);
}
}
int main()
{
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]<<' ';
return 0;
}