Cod sursa(job #455518)

Utilizator alexandru92alexandru alexandru92 Data 13 mai 2010 21:14:09
Problema Sortare prin comparare Scor 80
Compilator cpp Status done
Runda Arhiva educationala Marime 1.16 kb
/* 
 * File:   main.cpp
 * Author: virtualdemon
 *
 * Created on May 13, 2010, 9:00 PM
 */
#include <vector>
#include <cstdlib>
#include <fstream>
#include <iterator>

/*
 * 
 */
using namespace std;
vector< int > v;
inline void MegaSort( int left, int right )
{
    if( left < right )
    {
        int i, j, middle=left+(right-left)/2;
        MegaSort( left, middle );
        MegaSort( middle+1, right );
        vector< int > vv;
        for( i=left, j=middle+1; i <= middle && j <= right;  )
        {
            if( v[i] <= v[j] )
                vv.push_back(v[i]), ++i;
            else vv.push_back(v[j]), ++j;
        }
        for( ; i <= middle; ++i )
            vv.push_back(v[i]);
        for( ; j <= right; ++j )
            vv.push_back(v[j]);
        for( i=0, j=vv.size(); i < j; ++i )
            v[i+left]=vv[i];
    }
}
int main(int argc, char** argv)
{
    int N;
    ifstream in( "algsort.in" );
    in>>N;
    copy( istream_iterator<int>(in), istream_iterator<int>(), back_inserter(v) );
    ofstream out( "algsort.out" );
    MegaSort( 0, N-1 );
    copy( v.begin(), v.end(), ostream_iterator<int>( out, " " ) );
    out<<'\n';
    return (EXIT_SUCCESS);
}