Cod sursa(job #1059253)

Utilizator nguyen1995Van Tu Nguyen nguyen1995 Data 16 decembrie 2013 15:04:51
Problema Sortare prin comparare Scor 20
Compilator cpp Status done
Runda Arhiva educationala Marime 1.04 kb
#include <iostream>
#include<fstream>
using namespace std;
long x[500000],n;
ifstream f("algsort.in");
ofstream g("algsort.out");
void divizeaza(int s,int d,int &m)
{
    m=(s+d)/2;
}
void interclaseaza(int s,int d,int m)
{
    int i=s,j=m+1,k=1,v[100];
    while(i<=m && j<=d)
    {
        if(x[i]<x[j])
        {
            v[k]=x[i];
            i++;
        }
        else
        {
            v[k]=x[j];
            j++;
        }
        k++;
    }
    if(i<=m)
        while(i<=m)
    {
        v[k]=x[i];
        i++;
        k++;
    }
    else
        while(j<=d)
    {
        v[k]=x[j];
        j++;
        k++;
    }
    for(k=1,i=s;i<=d;k++,i++)
        x[i]=v[k];
}
void mergesort(int s,int d)
{
    int m;
    if(s<d)
    {
        divizeaza(s,d,m);
        mergesort(s,m);
        mergesort(m+1,d);
        interclaseaza(s,d,m);
    }
}
int main()
{
 long i;
 f>>n;
 for(i=1;i<=n;i++)
 {
     f>>x[i];
 }
 mergesort(1,n);
 for(i=1;i<=n;i++)
    g<<x[i]<<" ";
    return 0;
}