数组，一维数组，二维数组，交错数组

一维数组：

 

        static void Main(string[] args)
        {
            Array MyArr = Array.CreateInstance(typeof(int),5);    //数组的基类
            MyArr.SetValue(1,0);
            MyArr.SetValue(2,1);
            foreach (int i in MyArr)
            {
                Console.WriteLine(i);
            }
            //定义简单数组有三种方式
            int[] intarr = new int[3] { 1, 2, 3 };
            int[] intarr2 = new int[] { 1,2,3};
            int[] intarr3 = { 1,2,3};
        }

二维数组： 
foreach遍历 与 for循环

            int[,] arrint = new int[,] { { 1, 2, 3 }, { 4, 5, 6 } };
            arrint[0, 0] = 10;
            foreach (int arr in arrint)
            {
                Console.WriteLine(arr);
            }
            //存储有明显的行和列的区别
            for (int i = 0; i < arrint.GetLength(0); i++)
            {
                for (int j = 0; j < arrint.GetLength(1); j++)
                {
                    Console.WriteLine(arrint[i, j]);
                }
            }
             //运行结构如下

交错数组：  数组中的数组

foreach遍历 与 for循环

            int[][] arrint = new int[3][];
            arrint[0] = new int[] { 1, 2, 3 };
            arrint[1] = new int[] { 4, 5 };
            arrint[2] = new int[] { 6 };
            arrint[0][0] = 10;
            foreach (int[] i in arrint)
            {
                foreach (int j in i)
                {
                    Console.WriteLine(j);
                }
            }
            for (int r = 0; r < arrint.GetLength(0); r++)
            {
                for (int c = 0; c < arrint[r].Length; c++)
                {
                    Console.WriteLine(arrint[r][c]);
                }
            }
      
        //运行结构如下