我无法确定如何让这个工作...我试图找到使用DFS的目标的最短路径。我知道BFS是更好,但我被要求使用DFS为此。正如你可以看到,我试图做所有堆栈之间的比较,导致结束找到目标,但它不工作,只有第一个堆栈,导致目标是永远印刷...我知道某处我需要去访问节点,但我不知道究竟是如何。现在我得到一个目标的路径,但不是最短的。
I'm having trouble figuring out how exactly to get this to work... I'm attempting to get the shortest path to the goal using a DFS. I know that BFS is better but I was asked to use DFS for this. As you can see, I attempt to make a comparison between all stacks that lead to the end to find the goal, but it does not work, only the first stack that leads to the goal is ever printed... I know somewhere I need to unvisit nodes, but I cannot figure out exactly how. Right now I do get a path to the goal, but not the shortest one. Any help with this would be greatly appreciated.
推荐答案通过使用自己的堆栈来编写非递归DFS是可能的,但是发现递归解决方案更加优雅。这是一个草图:
Writing a non-recursive DFS is possible by using your own stack, but I find the recursive solution to be more elegant. Here is a sketch of one:
DFS(vertex) path.push_back(vertex) visited[vertex] = true if we found the exit output path else for each neighbor v of vertex if not visited[v] DFS(v) visited[vertex] = false path.pop_back()更多推荐
DFS在C ++中迷宫的最短路径
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