static void Main()
        {
            string titel = "MergeSort";
            string problem = @"* Write a program that sorts an array of integers using the merge sort algorithm (find it in Wikipedia).";

            Console.WriteLine("Title:   " + titel + "\n" + "Problem: " + problem);

            int[] arr = { 5, 9, 2, 3, 6, 4, 11, 10, 8, 14 }; // this is the array to be sorted

            MergeSortArray merge = new MergeSortArray();

            // Calling Merge Procedure
            merge.mergesort(arr, 0, arr.Length - 1);

            // Printing Sorted array. after merge sort
            foreach (int a in arr)
            {
                Console.Write(a + " ");
            }

        }