Write a C# Sharp program to rotate the elements of a given array of integers (length 4 ) in left direction and return the new array

using System;
namespace exercises
{
   class Program
    {       
        static void Main(string[] args)
        {
         
           int[] item = test(new[] { 10, 20, -30, -40 }); 
           
           Console.Write("Rotated array: ");
         
           foreach(var i in item)
            {
               Console.Write(i.ToString()+" ");
            }
        }
        
       public static int[]  test(int[] a1)
          {
             return new int[] { a1[1], a1[2], a1[3], a1[0] };
          } 
   }
}