}intcountNodes(TreeNode*root) {if(root ==NULL)return0;intdepth =GetDepth(root);intleaf =0;intdepth_left, depth_right;while(true) { depth_left= GetDepth(root->left); depth_right= GetDepth(root->right);if(depth_left ==0&& depth_right ==0) { leaf+=1;break; }if(depth_left ==...
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...
Given the root of a complete binary tree, return the number of the nodes in the tree. According to Wikipedia, every level, except possibly the last, is completely filled in a complete binary tree, and all nodes in the last level are as far left as possible. It can have between 1 and...
what do you need to know about the complete binary tree is, let’s assume the root is depth of 0 and the maximum depth is d, so the total number of nodes besides the leaf level will be 2^ (d) - 1, and the number of leaves is in the range of (1, 2^d) and all we need ...
0896-smallest-subtree-with-all-the-deepest-nodes 0904-leaf-similar-trees 0905-length-of-longest-fibonacci-subsequence 0906-walking-robot-simulation 0920-uncommon-words-from-two-sentences 0921-spiral-matrix-iii 0925-construct-binary-tree-from-preorder-and-postorder-traversal 0931-maximum-frequency-stack ...
A set of practice note, solution, complexity analysis and test bench to leetcode problem set - leetcode/CountSubArrayFixBound.drawio at b58bcceb0ea27d0756ad72fb6a64b3b547fae221 · brianchiang-tw/leetcode
828. Count Unique Characters of All Substrings of a Given String # 题目 # Let’s define a function countUniqueChars(s) that returns the number of unique characters on s, for example if s = "LEETCODE" then "L", "T","C","O","D" are the unique characters
Given a binary tree, count the number of uni-value subtrees. A Uni-value subtree means all nodes of the subtree have the same value.
A Perfect Binary Tree(PBT) is a tree with all leaf nodes at the same depth. All internal nodes have degree 2. 二叉树的第i层至多拥有 个节点数;深度为k的二叉树至多总共有 个节点数,而总计拥有节点数匹配的,称为“满二叉树”; 完满二叉树 (Full Binary Tree): ...
LeetCode 222. Count Complete Tree Nodes 原题链接在这里:https://leetcode.com/problems/count-complete-tree-nodes/ 题目: Given a complete binary tree, count the number of nodes. Definition of a complete binary tree fromWikipedia: In a complete binary tree every level, except possibly the last,...