此代码为“图的广度优先遍历”的源代码，图的存储形式为邻接表，里面有图的邻接表存储的代码，还有广度优先遍历的算法，还有验证的主函数。-This code is " breadth-first traversal map" of the source code, Figure storage form of adjacency list, there are plans stored in the adjacent table code, as well as breadth-fi