基于PRIM算法的迷宫生成，并用迭代的方式寻找迷宫路径，可以设置多出口多入口。可以用TXT文件输入迷宫，也可以生成迷宫TXT文件。-PRIM-based maze generating algorithm and finding the maze s path by iteration, you can set up multiple export multiple entrances. you can enter the maze by txt files,and also generate