static void Main(string[] args)
        {

            int[] myArray = new int[] {2, 4, 8, 16, 32, 64, 128, 256};

            Console.WriteLine(GetMaxAndMin(myArray));
            Console.ReadLine();
        }

        static string GetMaxAndMin(int[] array)
        {

            int min = array[0];
            int max = array[0];

            foreach (int n in array)
            {
                if (min > n) {
                    min = n;
                }

                if (max < n)
                {
                    max = n;
                }

            }

            return "Min = " + min + ", Max = " + max + ".";
        }
    }