2018-07-26 17:38:37 问题描述: 问题求解: 解法一. 第一种解法是使用Graph + BFS.换言之,就是将二叉树转化为无向图,然后在无向图中使用BFS进行层次遍历即可. 这种解法是比较直观的解法,是必须要进行掌握的,时间复杂度为O(n). public List<Integer> distanceK(TreeNode root, TreeNode target, int K) { HashMap<TreeNode, ArrayList<TreeNode>…
We are given a binary tree (with root node root), a targetnode, and an integer value K. Return a list of the values of all nodes that have a distance Kfrom the target node.  The answer can be returned in any order. Example 1: Input: root = [3,5,1,6,2…
[LeetCode]863. All Nodes Distance K in Binary Tree 解题报告(Python) 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree/description/ 题目描述: We are given a binary tree (with root no…
版权声明:欢迎查看本博客.希望对你有有所帮助 https://blog.csdn.net/cqs_2012/article/details/24880735 the longest distance of a binary tree 个人信息:就读于燕大本科软件project专业 眼下大三; 本人博客:google搜索"cqs_2012"就可以; 个人爱好:酷爱数据结构和算法,希望将来从事算法工作为人民作出自己的贡献; 博客内容:the longest distance of a bi…
[抄题]: We are given a binary tree (with root node root), a target node, and an integer value K. Return a list of the values of all nodes that have a distance K from the target node.  The answer can be returned in any order. Example 1: Input: root = [3…
We are given a binary tree (with root node root), a target node, and an integer value K. Return a list of the values of all nodes that have a distance K from the target node.  The answer can be returned in any order. Example 1: Input: root = [3,5,1,6…
We are given a binary tree (with root node root), a target node, and an integer value K. Return a list of the values of all nodes that have a distance K from the target node. The answer can be returned in any order. Example 1: Input: root = [3,5,1,6,…
We are given a binary tree (with root node root), a target node, and an integer value K. Return a list of the values of all nodes that have a distance K from the target node. The answer can be returned in any order. Example 1: Input: root = [3,5,1,6,…
We are given a binary tree (with root node root), a target node, and an integer value `K`. Return a list of the values of all nodes that have a distance K from the target node.  The answer can be returned in any order. Example 1: Input: root = [3,5,1…
We are given a binary tree (with root node root), a target node, and an integer value K. Return a list of the values of all nodes that have a distance K from the target node.  The answer can be returned in any order. Example 1: Input: root = [3,5,1,6…