Cod sursa(job #794457)

Utilizator shagarthAladin shagarth Data 6 octombrie 2012 13:00:31
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.68 kb
#include<fstream>
using namespace std;
ifstream f("algsort.in");
ofstream g("algsort.out");
int i,v[500001],l,r,n;
void quicksort(int v[],int l,int r)
{
	int i=l, j=r;
	int aux;
	int pv=v[(l+r)/2]; 
	
	while (i<=j)
	{	
		while (v[i]<pv)
            i++;
        while (v[j]>pv)
            j--;
        if (i<=j) 
		{
            aux=v[i];
            v[i]=v[j];
            v[j]=aux;
            i++;
            j--;
		}
	}
	if (l<j)
		quicksort(v,l,j);
	if (i<r)
		quicksort(v,i,r);
	return;
}
int main()
{
	f>>n;
	for(i=1;i<=n;i++)
	{
		f>>v[i];
	}
	l=1;
	r=n;
	quicksort(v,l,r);
	for(i=1;i<=n;i++)
	{
		g<<v[i]<<" ";
	}
	f.close();
	g.close();
}