输入一个字符串，以相反的顺序输出

  string MyString = Console.ReadLine();
            char[] MyChar = MyString.ToCharArray();
            int i = 0;
            string OutString = "";
            for (i = MyChar.Length - 1; i >= 0; i--)
            {
                OutString += MyChar[i];
            }
            Console.Write(OutString);
            Console.ReadKey();string