最短路径算法最短路径问题有多种情况可以讨论给定起点的最短路径问题给定终点的最短路径问题给定起点和终点的最短路径，也就是求任意两点最短路径(Shortest Path Algorithm Shortest Path Problem There are several situations where you can discuss the shortest path problem for a given starting point. The shortest path problem for a given end point gives the shortest path for the given and ending points, that is, the shortest path)