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Cod sursa(job #633773)
#include<fstream>
#define nmax 500001
using namespace std;
ifstream fin("algsort.in");
ofstream fout("algsort.out");
int n,a[nmax];
void citire()
{
fin>>n;
int i;
for(i=0;i<n;i++)
fin>>a[i];
fin.close();
}
void afisare()
{
int i;
for(i=0;i<n;i++)
fout<<a[i]<<" ";
}
void sortare( int st, int dr)
{
int pivot,i,j,aux;
if(st<dr)
{
pivot=(st+dr)/2;
i=st;j=dr;
while(i<=j)
{
while(a[i]<a[pivot]) i++;
while(a[j]>a[pivot]) j--;
if(i<=j)
{
aux=a[i];
a[i]=a[j];
a[j]=aux;
i++;
j--;
}
}
if(i<dr)
sortare(i,dr);
if(j>st)
sortare(st,j);
}
}
int main()
{
citire();
if(n>=1)
sortare(0,n-1);
afisare();
fin.close();
fout.close();
return 0;
}