公车最短路径算法具体的算法： 实际上乘客不一定要找最短，里面还涉及到换乘次数最少，费用最少等问题 因此，边向量的权值要分多种情况考虑，所以如果真的要开发实用的系统 应该给出多种最佳选择。 -Bus shortest path algorithm specific algorithm: in fact they do not necessarily find the shortest, which also involves the least number of t