Cod sursa(job #608573)

Utilizator cosminx2003Cosmin Clapon cosminx2003 Data 17 august 2011 13:29:42
Problema Sortare prin comparare Scor 60
Compilator cpp Status done
Runda Arhiva educationala Marime 0.65 kb
#include <fstream.h>
#define MAX 500002

ifstream f("algsort.in");
ofstream g("algsort.out");

int v[MAX];

void quicksort(int start,int stop);

int main()
{
	int i,j,p,n,aux;
	
	f>>n;
	for(i=1;i<=n;i++)
		f>>v[i];
	
	quicksort(1,n);
	
	for(i=1;i<=n;i++)
		g<<v[i]<<" ";
	
	f.close();
	g.close();
	return 0;
}

void quicksort(int start, int stop)
{
	int i,p,j,aux;
	
	if(stop-start<1) return;
	i=start;
	j=stop;
	p=v[(i+j)/2];
	while(i<j)
	{
		while(v[i]<p)
			i++;
		while(v[j]>p)
			j--;
		if(i<j)
		{
			aux=v[i], v[i]=v[j], v[j]=aux;
			if(v[i]==v[j]) j--;
		}
		
	}
	
	quicksort(start,i);
	quicksort(i+1,stop);
}