Write a C# Sharp program to find the largest value from first, last, and middle elements of a given array of integers of odd length (at least 1)

using System;
namespace exercises
{
   class Program
    {       
        static void Main(string[] args)
        {          
            Console.WriteLine(test(new[] {1}));
            Console.WriteLine(test(new[] {1,2,9}));
            Console.WriteLine(test(new[] {1,2,9,3,3}));
            Console.WriteLine(test(new[] {1,2,3,4,5,6,7}));
            Console.WriteLine(test(new[] {1,2,2,3,7,8,9,10,6,5,4}));
          
        }        
       static int test(int[] numbers)
          {
            int first, middle_ele, last_ele, max_ele;

            first = numbers[0];
            middle_ele = numbers[numbers.Length / 2];
            last_ele = numbers[numbers.Length - 1];
            max_ele = first;

            if (middle_ele > max_ele)
            {
                max_ele = middle_ele;
            }

            if (last_ele > max_ele)
            {
                max_ele = last_ele;
            }

            return max_ele;
        }
   }
}