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查询Tags标签： 863，共有 1条记录-
863. All Nodes Distance K in Binary Tree
The key to solve this problem is to find the path from root to target, and put the length to target of every node from root to target to a map. Then either using BFS or using DFS depends on you. BFS:/*** Definition for a binary tree node.* public clas…
2022/4/14 9:13:04 人评论 次浏览
