Cod sursa(job #916233)

Utilizator dumitrualexAlex Dumitru dumitrualex Data 16 martie 2013 09:12:31
Problema Generare de permutari Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.6 kb
#include <cstdio>

int s[10];
int util[10];
int n;

void afis()
{
    int i;
    for (i = 0; i < n; i++)
        printf("%d ", s[i]);
    printf("\n");
}
void back(int k)
{
    int i;
    if (k == n)
        afis();
    else
        for (i = 1; i <= n; i++)
            if (!util[i])
            {
                s[k] = i;
                util[i] = 1;
                back(k + 1);
                util[i] = 0;
            }
}
int main()
{
    freopen("permutari.in", "r", stdin);
    freopen("permutari.out", "w", stdout);

    scanf("%d", &n);
    back(0);
    return 0;
}