import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class AllSort1 {
    public static void main(String[] args){
        int[] num = new int[]{1,2,3};

        List<List<Integer>> out= sort(num);
        System.out.println(out);
    }

    public static List<List<Integer>> sort(int[] num) {
        List