}if(ldepth ==rdepth)return(1<< (ldepth +1)) -1;elsereturncountNodes(root->left) + countNodes(root->right) +1; } 解法二:迭代 intGetDepth(TreeNode *root) {intdepth =0;while(root) { depth++; root= root->left; }returndepth; }intcountNodes(TreeNode*root) {if(root ==NULL)retu...
3.当右子树不存在而左子树存在时,递归1 + countNodes(root->left); 4.当左右子树都不存在时,递归结束,返回1。 代码 /** * Definition for a binary tree node. * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x), left(NULL), right(NULL)...
https://leetcode.com/problems/count-complete-tree-nodes/ 题目: complete Definition of a complete binary tree fromWikipedia: In a complete binary tree every level, except possibly the last, is completely filled, and all nodes in the last level are as far left as possible. It can have betwee...
Given a complete binary tree, count the number of nodes. Definition of a complete binary tree from Wikipedia: In a complete binary tree every level, except possibly the last, is completely filled, and all nodes in the last level are as far left as possible. It can have between 1 and 2h...
Can you solve this real interview question? Count Complete Tree Nodes - Given the root of a complete binary tree, return the number of the nodes in the tree. According to Wikipedia [http://en.wikipedia.org/wiki/Binary_tree#Types_of_binary_trees], every
In a complete binary tree every level, except possibly the last, is completely filled, and all nodes in the last level are as far left as possible. It can have between 1 and 2h nodes inclusive at the last level h. which means as left as possible. ...
Can you solve this real interview question? Count Nodes With the Highest Score - There is a binary tree rooted at 0 consisting of n nodes. The nodes are labeled from 0 to n - 1. You are given a 0-indexed integer array parents representing the tree, where
在LeetCode 1973题中,DFS算法的时间复杂度是多少? 文章目录 1. 题目 2. 解题 1. 题目 Given the root of a binary tree, return the number of nodes where the value of the node is equal to the sum of the values of its descendants. A descendant of a node x is any node that is on the...
222. Count Complete Tree Nodes 2019-12-25 11:05 −- 题目思路 [题目来源](https://leetcode.com/problems/count-complete-tree-nodes/) - C++代码实现 ``` class Solution { public: int countNodes(TreeNode* root) { if ... 尚修能的技术博客 ...
Solution to Count Visited Nodes in a Directed Graph ( LeetCode 2876 ) … d713692 amemov self-assigned this Nov 14, 2024 Collaborator kcc commented Nov 18, 2024 It's a fine puzzle. You are doing it for yourself, so I'll take your word :) But the PR contains only empty files...