基于Dijkstra方法的最短路径改良版方法,能够一次性搜索出最优最优起点终点、最优路径、路径长度，常用于图论相关问题-Shortest path method ,which is based on a modified version of the method Dijkstra, is possible to search out the best starting point, terminate point, the optimal path, and the path length.I