//將二維陣列行和列互換，存到另一個二維陣列中

        public static void CTL(int[,] arr1)
        {
            //執行換行
            int[,] arr2 = new int[3,3];
            for (int i = 0; i < 3; i++)
            {
                for (int j= 0; j < 3; j++)
                {
                    arr2[i, j] = arr1[j,i];
                }
            }
            //將換行資料輸出
            Console.WriteLine("互換後:\n");
            for (int i = 0; i < 3; i++)
            {
                for (int j = 0; j < 3; j++)
                {
                    Console.Write(arr2[i, j]+" ");
                }
                Console.WriteLine("\n");
            }
        }

        static void Main(string[] args)
        {
           //程式2二維陣列互換位置
            int[,] arr = new int[3, 3] { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 } };
            Console.WriteLine("互換前:\n");
            for (int i = 0; i < 3; i++)
            {
                for (int j = 0; j < 3; j++)
                {
                    Console.Write(arr[i, j] + " ");
                }
                Console.WriteLine("\n");
            }
            CTL(arr);

            Console.ReadLine();
        }