Cod sursa(job #1553064)

Utilizator stefantagaTaga Stefan stefantaga Data 19 decembrie 2015 10:38:41
Problema Generare de permutari Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.79 kb
#include <fstream>

using namespace std;
ifstream f("permutari.in");
ofstream g("permutari.out");
int a[11],sol[11],n;

bool ok(int k)
{
    int i;
    for (i=1;i<=k-1;i++)
    {
        if (sol[k]==sol[i])
        {
            return false;
        }
    }
    return true;
}
void  afis()
{
    int i;
    for (i=1;i<=n;i++)
    {
        g<<a[sol[i]]<<" ";
    }
    g<<'\n';
}
void backk(int k)
{
    int i;
    if (k>n)
    {
        afis();
    }
    else
    {
        for (i=1;i<=n;i++)
        {
            sol[k]=i;
            if (ok(k)==true)
            {

                backk(k+1);
            }
        }
    }
}
int main()
{
    int i;
    f>>n;
    for (i=1;i<=n;i++)
    {
        a[i]=i;
    }
    backk(1);
    return 0;
}