中文说明：次代码可以讲述了matlab如何实现图论编程内容描述太少。请注意：没有清晰描述的代码将会被删除。请尽量详细描述您的代码，以便获得更多积分。
English Description：
Minor code describes how MATLAB programming realization of graph theory description is too small. Please note: there is no clear description of codes will be deleted. Please try to describe your code in detail, in order to get more points.