Cod sursa(job #1250287)

Utilizator scipianusFMI Ciprian Olariu scipianus Data 27 octombrie 2014 23:10:11
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.97 kb
#include <fstream>
#include <queue>
using namespace std;
int n, v[500100];
queue <int> Q[2][256];
 
int main()
{
    int i, conf, val, p = 0;
    ifstream fin("algsort.in");
    fin >> n;
	for(i = 1; i <= n; ++i)
		fin >> v[i];
    fin.close();
     
    for(i = 1; i <= n; ++i)
        Q[0][v[i] & 255].push(v[i]);
    for(i = 1; i < 4; ++i, p = 1 - p)
    {
        for(conf = 0; conf < 256; ++conf)
        {
            while(!Q[p][conf].empty())
            {
                val = Q[p][conf].front();
                Q[p][conf].pop();
                Q[1 - p][(val >> (8 * i)) & 255].push(val);
            }
        }
    }
     
    ofstream fout("algsort.out");
    for(conf = 0, i = 1; conf < 256; ++ conf)
    {
        while(!Q[p][conf].empty())
        {
            val = Q[p][conf].front();
            Q[p][conf].pop();
			fout << val << ' ';
            i++;
        }
    }
    fout << "\n";
    fout.close();
    return 0;
}