Cod sursa(job #240503)

Utilizator mihai_floreaFlorea Mihai Alexandru mihai_florea Data 7 ianuarie 2009 19:22:24
Problema Sortare prin comparare Scor 100
Compilator c Status done
Runda Arhiva educationala Marime 0.6 kb
#include <stdio.h>
#define NMAX 500005
int N,a[NMAX];
void QSort(int ls,int ld){
     int i=ls,j=ld,x=a[(ls+ld)/2],aux;
     do
      {
       while (i<=ld && a[i]<x) ++i;
       while (j>=ls && a[j]>x) --j;
       if (i<=j) aux=a[i],a[i]=a[j],a[j]=aux,++i,--j;
      }
     while (i<=j);
     if (i<ld) QSort(i,ld);
     if (j>ls) QSort(ls,j);
     }
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",&a[i]);
    QSort(1,N);
    for (i=1;i<=N;++i) printf("%d ",a[i]);
    return 0;
}