“渔人过河”是数据结构里面很常见的一个课题。要求是找出最好路径，并将路径保存输出，这里面涉及到链表二叉树的知识。技巧性还是有一些的。-" Fisherman' s across the river"　is a very common data structure inside of an issue. Requirement is to find the best path, the path and save the output, there is related to the knowledge tree list. Skills or have some of the.