Cod sursa(job #166403)

Utilizator tm_raduToma Radu tm_radu Data 27 martie 2008 22:45:18
Problema Generare de permutari Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.65 kb
#include <stdio.h>

int n;
int x[10], s[10];

void Back(int k);
void Write();

int main()
{
    freopen("permutari.in", "r", stdin);
    freopen("permutari.out", "w", stdout);
    scanf("%d", &n);
    
    Back(1);
    
    return 0;
}

void Back(int k)
{
    for ( int i = 1; i <= n; i++ )
    {
        x[k] = i;
        if ( !s[i] )
        {
            s[i] = 1;
            if ( k == n ) Write();
            else          Back(k+1);
            s[i] = 0;
        }
    }
}

void Write()
{
    for ( int i = 1; i < n; i++ )
        printf("%d ", x[i]);
    printf("%d\n", x[n]);
}