二维数组

定义一个二维数组

int[,] n=new int[几个一维数组，数组中的个数];

例:

int [,] n=new int [4,2]; 可以理解为4个一维数组，每个数组重包含2个元素。

int [,] n=new int [4,2]{{3,8},{1,2},{2,9},{5,7}}

取值则是：

int i=n[4,2]

i=7；   //第四个数组的第二位 7；

int a=n[3，1]

a=2； //第三个数组的第二位 1；

我们可以利用二维数组来构建一个走迷宫或者推箱子地图来加深对二位数组的理解，

例，走迷宫

static void Main(string[] args)
        {
            int x, y, i, j, r;
            x = 3; y = 3;r=0;
            int[,] map = new int[10, 10]
            {
                {1,1,1,1,1,1,1,1,1,1},
                {1,0,0,0,0,0,0,0,0,1},
                {1,0,0,1,1,1,0,1,0,1},
                {1,0,0,2,0,1,1,4,1,1},
                {1,0,0,1,0,1,1,0,1,1},
                {1,0,0,1,0,0,0,0,1,1},
                {1,0,0,1,0,1,1,1,1,1},
                {1,0,0,1,0,1,0,0,0,1},
                {1,0,0,1,0,1,0,0,0,1},
                {1,1,1,1,1,1,1,1,1,1},
            };                                                         //地图
            while (true)
            {
                ConsoleKeyInfo d = Console.ReadKey();  //激活光标 ↑  ← ↓ →；
                if (d.Key.ToString() == "RightArrow")
                {   if(map[y,x+1]==0)
                     {
                         r = map[y, x];                              //如果向右移动一格为0，那么值交换；
                         map[y, x] = map[y, x + 1];
                         map[y, x + 1] = r;
                         x++;
                     }                 
                    if (map[y, x + 1] ==4&&map[y,y+2]==0)
                    {
                        r = map[y, x];
                        map[y, x] = map[y, x + 2];
                        map[y, x + 1] = r;
                        x++;
                        r = map[y, x];
                        map[y, x] = map[y, x + 1];
                        map[y, x + 1] = r;
                        x++;

                    }
                }


                if (d.Key.ToString() == "DownArrow")
                {
                    r = map[y, x];
                    map[y, x] = map[y + 1, x];
                    map[y + 1, x] = r;
                    y++;

                }

                if (d.Key.ToString() == "UpArrow")
                {
                    r = map[y, x];
                    map[y, x] = map[y - 1, x];
                    map[y - 1, x] = r;
                    y--;
                }
                if (d.Key.ToString() == "LeftArrow")
                {
                    r = map[y, x];
                    map[y, x] = map[y, x - 1];
                    map[y, x - 1] = r;
                    x--;
                }
                Console.Clear();                     //清屏
                for (i = 0; i < 10; i++)           //打印地图
                {
                    for (j = 0; j < 10; j++)
                    {
                        if (map[i, j] == 1)
                        {
                            Console.Write("■");
                        }
                        else if (map[i, j] == 0)
                        {
                            Console.Write("  ");
                        }
                        else if (map[i, j] == 2)
                        {
                            Console.Write("♀");
                        } 

                        else if (map[i, j] == 4)
                        {
                            Console.Write("□");
                        }                      
                        else
                        {
                            break;
                        }
                    }
                    Console.WriteLine();
                }

多讲无益，自己理解，方法很多。