Cod sursa(job #948023)

Utilizator rogoz.bogdanRogoz Bogdan rogoz.bogdan Data 9 mai 2013 10:10:30
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.92 kb
#include <fstream>
using namespace std;

fstream fin("algsort.in", ios::in);
fstream fout("algsort.out", ios::out);

long long a[500001],b[500001],n;

void interclas(int i,int m,int j)
{

    int x=i;
    int k=1;
    int y=m+1;
    while(x<=m && y<=j)
         if (a[x]<a[y])
               b[k++]=a[x++];
         else
               b[k++]=a[y++];


     while (x<=m)
            b[k++]=a[x++];
     while (y<=j)
            b[k++]=a[y++];

     int t=i;
     for (k=1;k<=(j-i)+1;k++)
            a[t++]=b[k];
}



void divimp(int i,int j)
{
    if (i<j)

    {
        int m=(i+j)/2;
        divimp(i,m);
        divimp(m+1,j);
        interclas(i,m,j);
    }

}


int main()
{
    long long i;
    fin>>n;
    for(i=1;i<=n;i++)
    fin>>a[i];

    divimp(1,n);
    for(i=1;i<=n;i++)
       fout<<a[i]<<' ';
       fin.close(); fout.close();
       return 0;
    return 0;

}