问题
I need an algorithm for finding the shortest path in a maze that will use recursion. It is my understanding that algorithms that use recursion are usually DFS.
I have been looking all over the internet and most results are just Dijkstra's algorithm, which is not recursive. Can someone please provide a pseudo code or point me to the right direction?
Thank you.
回答1:
Why do you need to use recursion? The most simple algorithm for finding the shortest path is BFS, not DFS, and it is not recursive. I know of no good and fast general-case shortest path algorithm that uses recursion.
But also note that if your graph (maze) is a tree, i.e. has no cycles, then from each vertex to each other there is only one way, and it will be shortest, so DFS will be applicable in this case.
来源：https://stackoverflow.com/questions/30433375/maze-depth-first-path-algorithm-using-recurssion