题描述的是一个旅行商要到几个城市去，每个城市必须去一次且仅能去一次，要求满足这样条件的最短路径。将本软件稍作扩展即可用于城市规划、公交车路径安排-that descr iption is a traveling salesman to several cities, each city must go to one and only one, satisfy requirements for the shortest path. This software can be used for som