public static void Main()
var input = "input".ToCharArray();
char[] charList = new char[input.Length];
for (int i = 0; i < 2; i++)
char temp = input[input.Length - 1];
for (int j = input.Length - 1; j > 0 ; j--)
charList[j] = input[j - 1];
charList = new char[input.Length];
Console.WriteLine(string.Join("", input));