Cod sursa(job #738603)

Utilizator galbenugalbenu dorin galbenu Data 21 aprilie 2012 01:47:27
Problema Sortare prin comparare Scor 40
Compilator cpp Status done
Runda Arhiva educationala Marime 0.95 kb
#include<cstdlib>
#include<cstdio>
#include<algorithm>
#define lmax 500050
#define in "r"
#define out "w"
using namespace std;
FILE *f=fopen("algsort.in",in),*g=fopen("algsort.out",out);
int n,i,a[lmax];
void schimbint(int &a,int &b)
{
    int aux;
    aux=a;
    a=b;
    b=aux;
}
void divizeaza(int s,int d,int &m)
{
    int i=s,j=d,pi=0,pj=1;
    while(i<j)
    {
        if(a[i]>a[j])
            schimbint(pi,pj),schimbint(a[i],a[j]);
        i+=pi;
        j-=pj;
    }
    m=i;
}
void qs(int s,int d)
{
    int m;
    if(s<d)
    {
        divizeaza(s,d,m);
        qs(s,m-1);
        qs(m+1,d);
    }
}
void show_vector()
{
    int i;
    for(i=1; i<=n; i++)
        fprintf(g,"%d ",a[i]);
}
void read()
{
    int i;
    fscanf (f,"%d",&n);
    for(i=1; i<=n; i++)
        fscanf(f,"%d",&a[i]);
}
int main()
{
    read();
    qs(1,n);
    show_vector();
    fclose(f);
    fclose(g);
    return 0;
}