Write a C# Sharp program to create a new string without the first and last character of a given string of any length

using System;
namespace exercises
{
   class Program
    {       
        static void Main(string[] args)
        {
            Console.WriteLine(test("Hello"));
            Console.WriteLine(test("JS"));
             Console.WriteLine(test(""));
            Console.ReadLine();
        }
        
         public static string test(string s1)
         {
              return s1.Length < 2 ? String.Empty : s1.Substring(1, s1.Length - 2);
         }
  }
}