说明：  求解一个最短路径问题程序，可以参考一下求一个Dijkstra优化算法！ 谢谢了 目的是求给定两点之间的最短距离 或者改一下我的程序也行
(shortest path to solve a problem of procedure, can seek a reference Dijkstra algorithm optimization! Thank you, the purpose is scheduled for 2:00 to the shortest distance between or change my procedure OK)