Cod sursa(job #309742)

Utilizator Bogdan_tmmTirca Bogdan Bogdan_tmm Data 1 mai 2009 00:03:29
Problema Sortare prin comparare Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.7 kb
#include<iostream>
#include<stdio.h>
#include<vector>
#include<algorithm>
#include<time.h>
using namespace std;
vector <int> a;
int n,i,x;
void QSort(int st,int dr)
{
	int i=st,j=dr,aux=st+rand()%(st-dr);
	swap(a[st],a[aux]);
	do
	{	
		while(i<=j&&a[i]<a[aux]) i++;
		while(i<=j&&a[j]>a[aux]) j--;
		if(i<=j) swap(a[i++],a[j--]);
	}while(i<=j);
	if(i<dr) QSort(i,dr);
	if(st<j) QSort(st,j);
}
inline void Cout(int x)
{
	printf("%d ",x);
}
int main()
{
	freopen("algsort.in","r",stdin);
	freopen("algsort.out","w",stdout);
	scanf("%d",&n);
	for(i=1;i<=n;i++)
	{
		scanf("%d",&x);
		a.push_back(x);
	}
	QSort(0,n-1);
	for_each(a.begin(),a.end(),Cout);
	printf("\n");
	return 0;
}