Cod sursa(job #608159)

Utilizator cosminx2003Cosmin Clapon cosminx2003 Data 15 august 2011 13:54:34
Problema Sortare prin comparare Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.84 kb
#include <fstream.h>
#include <iostream.h>
#define MAX 500001
#define MAXX 20
ifstream f("algsort.in");
ofstream g("algsort.out");
int v[MAX],s[MAXX];

int main()
{
	int i,n,c=0,stop,start,j,p,aux,k;
	
	f>>n;
	for(i=1;i<=n;i++)
		f>>v[i];

	s[c++]=1;
	s[c++]=n;
	while(c>0)
	{
		j=s[--c];
		i=s[--c];
		start=i;
		stop=j;
		k=1;
		
		p=v[(i+j)/2];
		while(i<j&&k<=n)
		{
			while(v[i]<p)
				i++;
			while(v[j]>p)
				j--;
			if(i<j)
				aux=v[i], v[i]=v[j], v[j]=aux;
			k++;
		}
		
		if(i-start > stop-i)
		{
			if(stop-i > 1)
				s[c++]=i, s[c++]=stop;
			if(i-start > 1)
				s[c++]=start, s[c++]=i-1;
		}
		else
		{
			if(stop-i > 1)
				s[c++]=i+1, s[c++]=stop;
			if(i-start > 1)
				s[c++]=start, s[c++]=i;
		}
	}
	
	
	for(i=1;i<=n;i++)
		g<<v[i]<<" ";
	
	f.close();
	g.close();
	return 0;
}