【LeetCode】21. Diameter Binary Tree· 二叉树的直径 秦她的菜 吉利 程序员 来自专栏 · Leetcode刷题笔记 题目描述 英文版描述 Given the root of a binary tree, return the length of the diameter of the tree. The diameter of a binary tree i
当年谷歌面试失败,求解所有path的代码: #Definition for a binary tree node.#class TreeNode(object):#def __init__(self, x):#self.val = x#self.left = None#self.right = NoneclassSolution(object):defdiameterOfBinaryTree(self, root):""":type root: TreeNode :rtype: int"""ans=[[]]defge...
LeetCode Given a binary tree, you need to compute the length of the diameter of the tree. The diameter of a binary tree is the length of thelongestpath between any two nodes in a tree. This path may or may not pass through the root. Example: Given a binary tree 1 / \ 2 3 / \...
Can you solve this real interview question? Diameter of Binary Tree - Given the root of a binary tree, return the length of the diameter of the tree. The diameter of a binary tree is the length of the longest path between any two nodes in a tree. This p
leetcode 543. Diameter of Binary Tree 最长树的片段 + 深度优先遍历DFS,Givenabinarytree,youneedtocomputeenanytwonodesinatree.Thispathmayormayn...
Leetcode 543. Diameter of Binary Tree 二叉树节点的最大距离 MaRin 菜鸡一只 dfs解法: class Solution: def depth(self, root): if root is None: return 0 L = self.depth(root.left) R = self.depth(root.right) self.ans = max(self.ans, L+R+1) return max(L, R) +1 def diameterOfBinar...
第一反映是递归,假设root的左子树以及右子树的diameterOfBinaryTree已经求解出来,那么我们只需要判断一种情况即可,即diameterOfBinaryTree的path并没有经过根节点的情况。 也就是说,path存在于root的左子树或者右子树中。遇到这种情况,只有可能是左子树的深度+右子树的深度 < 左子树的diameter或者右子树的diameter。所以...
今天介绍的是LeetCode算法题中Easy级别的第124题(顺位题号是543)。给定二叉树,您需要计算树的直径长度。 二叉树的直径是树中任意两个节点之间最长路径的长度。 此路径可能会也可能不会通过根节点。例: 给出一棵二叉树 1 / \ 2 3 / \ 4 5 返回3,这是路径[4,2,1,3]或[5,2,1,3]的长度。 注意:...
Given a binary tree 1 / \ 2 3 / \ 4 5 Return 3, which is the length of the path [4,2,1,3] or [5,2,1,3]. Note: The length of path between two nodes is represented by the number of edges between them. 思路 考虑路径经过根节点和不经过根节点的情况。递归处理。
Given a binary tree, you need to compute the length of the diameter of the tree. The diameter of a binary tree is the length of the longest path between any two nodes in a tree. This path may or may not pass through the root. ...