static void Main(string[] args)
        {
            int[] arr = { 12, 132, 11, 3, 89 };
            Console.WriteLine("Before sorting-");
            PrintArray(arr);

            SortingUtility.Sort(arr);
            Console.WriteLine("\nAfter sorting-");
            PrintArray(arr);

            Console.ReadKey();
        }
        static void Main(string[] args)
        {
            int[] arr = { 23, 11, 345, 34, 100 };
            Console.WriteLine("Before sorting-");
            PrintArray(arr);

            SortingUtility.MergeSort(arr);
            Console.WriteLine("\nAfter Sorting-");
            PrintArray(arr);

            Console.ReadKey();
        }