public class Palindrome
        {
            public static void Main(string[] args)
            {
                Console.WriteLine(Palindrome.IsPalindrome("kék"));
                Console.ReadLine();
            }

            public static bool IsPalindrome(string word)
            {
                char[] input = word.ToLower().ToCharArray();

                char[] reverseWord = new char[input.Length];
                int j = 0;

                for (int i = input.Length - 1; i >= 0; i--)
                {
                    reverseWord[j] = input[i];
                    j++;
                }

                if (reverseWord == input)
                {
                    return true;
                }

                return false;
            }
        }