using System;

public class Program

{

    public static void Main()

    {

        string[] principals = {"Williams","Harris","Sweeney","DuBeau","Roche"};

        Array.Sort(principals);

        foreach(string name in principals)

            Console.Write(name + " ");

        Console.WriteLine();

        Console.WriteLine();

        Array.Reverse(principals);

        foreach(string name in principals)

            Console.Write(name + " ");

    }

}