经典的迷宫问题，用户可以选择随即地图，或者使用已存好的地图，然后画出这个地图，然后自动走迷宫，用户可慢慢观察走的路线，最后打印出可通路径。-Classic maze problem, then map the user can choose, or keep using a good map, and then draw the map, and then automatically Maze, the user can observe the route, and finally print