//Úloha 16
public static void main(String[] args) {

        System.out.println("Zadaj 3 písmená a tento program ti vypíše všetky ich kombinácie bez opakovania");
        System.out.println("Teraz zadaj tie 3 písmená");

        Scanner sc = new Scanner(System.in);

        char a = sc.next().charAt(0);
        char b = sc.next().charAt(0);
        char c = sc.next().charAt(0);
        sc.close();

        //1
        System.out.print("1. slovo: ");
        System.out.print(a);
        System.out.print(b);
        System.out.println(c);

        //2
        System.out.print("2. slovo: ");
        System.out.print(a);
        System.out.print(c);
        System.out.println(b);

        //3
        System.out.print("3. slovo: ");
        System.out.print(b);
        System.out.print(a);
        System.out.println(c);

        //4
        System.out.print("4. slovo: ");
        System.out.print(b);
        System.out.print(c);
        System.out.println(a);

        //5
        System.out.print("5. slovo: ");
        System.out.print(c);
        System.out.print(a);
        System.out.println(b);

        //6
        System.out.print("6. slovo: ");
        System.out.print(c);
        System.out.print(b);
        System.out.println(a);

    }