static void UberIsPalindrome(string palindrome)
        {
            string isPalindrome1 = RemoveAllSpecialCharactersAndLower(palindrome);
            char[] isPalindrome2 = isPalindrome1.ToCharArray();
            Array.Reverse(isPalindrome2);
            Console.WriteLine((isPalindrome1 == string.Join("", isPalindrome2) ? true : false));
        }

        static string RemoveAllSpecialCharactersAndLower(string testStr)
        {
            string str = testStr.ToLower();
            char[] buffer = new char[str.Length];
            int indx = 0;

            foreach (char c in str)
            {
                if ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'z'))
                {
                    buffer[indx] = c;
                    indx++;
                }
            }

            return new string(buffer, 0, indx);
        }