using System;

public class Program

{

    public static void Main()

    {

        /* Write a C# Sharp program to create a new string with the last char added at the front and back of a given string of length 1 or more */

        Console.WriteLine("Marlen Martinez Cruz");

        Console.WriteLine(test("Red"));

            Console.WriteLine(test("Green"));

            Console.WriteLine(test("1"));

            Console.ReadLine();

        }

​

        public static string test(string str)

        {

            var s = str.Substring(str.Length-1);

            return s + str + s;

        }

    }

​