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Cod sursa(job #393077)
#include<fstream.h>
#include<iostream.h>
int a[500001];
inline int partition(int li,int ls)
{
int i,j,aux;
i=li;
for(j=li;j<ls;j++)
if(a[j]<a[ls]){
aux=a[i];
a[i]=a[j];
a[j]=aux;
i++;
}
aux=a[i];
a[i]=a[ls];
a[ls]=aux;
return i;
}
void quicksort(int li,int ls)
{
int poz;
if(li<ls){
poz=partition(li,ls);
quicksort(li,poz-1);
quicksort(poz+1,ls);
}
}
int main()
{
int i,n;
ifstream fin("algsort.in");
ofstream fout("algsort.out");
fin>>n;
for(i=1;i<=n;i++)fin>>a[i];
quicksort(1,n);
for(i=1;i<=n;i++)fout<<a[i]<<" ";
return 0;
}