中文说明：内含A星算法，dijkstra算法，greedy算法，可以三种算法运行同一图形便于比较，也可分别运行。用于寻找最短路径，并带有时间计算
English Description：
Contains a-star algorithm, Dijkstra algorithms, greedy algorithms, you can run the same three algorithms graph comparison, may also run. Used to find the shortest path, and with time