C#中如何倒叙输出从键盘输入的字符串？

Question

     请各位高手指导一下～～

Answer 1

char[] s = "Abcdef".ToCharArray();
Array.Reverse(s);
string t = s.ToString();

Answer 2

            string str = "asfdasdf";  //输入
            char[] aa = str.ToCharArray();
            Array.Reverse(aa);
            string bb = "";
            for (int i = 0; i < aa.Length; i++)
            {
                bb += aa[i].ToString();
            }
            Response.Write(bb.ToString());