Cod sursa(job #371986)

Utilizator mihai_floreaFlorea Mihai Alexandru mihai_florea Data 8 decembrie 2009 00:59:11
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.75 kb
#include <cstdio>
#include <algorithm>
using namespace std;
int N,x[500005];
void sort(int l,int r)
{
     int i=l,j=r,k=x[(l+r)/2];
     do 
     {
         while (x[i]<k) ++i;
         while (x[j]>k) --j;
         if (i<=j)
         {
            if (i<j && x[i]>x[j]) 
            {
                int aux=x[i];
                x[i]=x[j];
                x[j]=aux;
            }
            ++i;--j;
         }
     }
     while(i<=j);
     if (l<j) sort(l,j);
     if (i<r) sort(i,r);
}
int main()
{
    int i;
    freopen("algsort.in","r",stdin);
    freopen("algsort.out","w",stdout);
    scanf("%d",&N);
    for (i=1;i<=N;++i) scanf("%d",&x[i]);
    sort(1,N);
    for (i=1;i<=N;++i) printf("%d ",x[i]);
    return 0;
}