// PermutationExample.java SJ
// Esimerkki Permutation-luokan käytöstä

import java.util.Iterator;
import java.lang.Iterable;

public class PermutationExample {

	public static void main(String[] args) {

        int N = 3, K = 6;

		PermutationExample l = new PermutationExample();

        if (args.length > 0)
            N = Integer.valueOf(args[0]);

        if (args.length > 1)
            K = Integer.valueOf(args[1]);

        Permutation P = new Permutation(N);
        // Permutation P = new Permutation(N, 42);   // satunnaissiemen

        System.out.println("Kaikki permutaatiot:");
        for (int[] perm : P) {
            if (N <= 6) {   // ei tulosta suurilla N:llä
                for (int i = 0; i < N; i++)
                    System.out.print(perm[i] + " ");
                System.out.println();
            }
        }

        System.out.println("Satunnaisia :");
        for (int s = 0; s < K; s++) {
            int[] perm = P.randomPermutation();
            for (int i = 0; i < N; i++)
                System.out.print(perm[i] + " ");
            System.out.println();
        }

        System.out.println("Satunnaisia eri kokoisia:");
        for (int s = 1; s <= K; s++) {
            int[] perm = P.randomPermutation(s);
            for (int i = 0; i < s; i++)
                System.out.print(perm[i] + " ");
            System.out.println();
        }

	} // main()
}