using System;

​

namespace exercises

{

 public class Program

    {

       public static void Main(string[] args)

        {

            Console.WriteLine("Name: JENIFER CARDENAS GOMEZ");

            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;

        }

    }

}

​