public static void CheckIfAnagram(string w1, string w2)
        {
            var checker = new CheckWords();

            if (checker.IsAnagram(w1, w2))
            {
                Console.WriteLine(w1 + " and " + w2 + " are anagrams.");
            }
            else
            {
                Console.WriteLine(w1 + " and " + w2 + " are not anagrams.");
            }
        }