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)...
* TreeNode *right; * TreeNode(int x) : val(x), left(NULL), right(NULL) {} * };*/classSolution {public:intgetHeight(TreeNode* root,intdeep) {if(root ==NULL)returndeep;returngetHeight(root -> left, deep +1); }boolcheckHaveIndex(TreeNode* root,inttarget,intcurPos) {if(root){...
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
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...
【Leetcode】Count Complete Tree Nodes 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...
Given a complete binary tree, count the number of nodes. 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. ...
首先complete binary tree 的左子树和右子树中肯定会有一个 perfect binary tree。 假如countNodes 的时间消耗是 T(n)。那么对于不是 perfect binary tree 的子树,时间消耗就是 T(n/2),perfect binary tree 那部分因为计算了树的高度,就是 clog(n)。 T(n) = T(n/2) + c1 lgn = T(n/4) + c1 lg...
222. Count Complete Tree Nodes.py Browse files main Filip-Dymczyk committed Mar 24, 2024 1 parent f35823f commit 9fb3f55 Showing 1 changed file with 0 additions and 0 deletions. Whitespace Ignore whitespace Split Unified Empty file added 0 222. Count Complete Tree Nodes.py Empty ...
八英里 0 630 222. 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 0 100 < 1 > 2004...
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 ...