static void PrintArray(int[,] array)
        {
            int row = array.GetLength(0);
            int col = array.GetLength(1);
            double max = Math.Floor(Math.Log10(array.Cast<int>().Max())) + 2;
            string format = "{0," + max +"}";

            Console.WriteLine(format);
            for (int r = 0; r < row; r++)
            {
                for (int c = 0; c < col; c++)
                {
                    Console.Write(format, array[r, c]);
                }
                Console.WriteLine("");
            }
            Console.WriteLine("");
        }