Explanation: The red nodes are the nodes with even-value grandparent while the blue nodes are the even-value grandparents. Constraints: The number of nodes in the tree is between1and10^4. The value of nodes is between1and100. 祖父节点值为偶数的节点和。 给你一棵二叉树,请你返回满足以下条...
Explanation: The red nodes are the nodes with even-value grandparent while the blue nodes are the even-value grandparents. Constraints: The number of nodes in the tree is between1and10^4. The value of nodes is between1and100. 题目大意:计算树中所有祖父结点值为偶数的结点值的和。 方法一:直...
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...
递归 日期 题目地址:https://leetcode.com/contest/weekly-contest-110/problems/range-sum-of-bst/ 题目描述 Given therootnode of a binary search tree, return the sum of values of all nodes with value betweenLandR(inclusive). The binary search tree is guaranteed to have unique values. Example 1...
leetcode 二叉树路径和 path sum 1. Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum. For example: Given the below binary tree andsum = 22,...
The number of nodes in the tree is in the range [1, 1000]. 0 <= Node.val <= 9 The depth of the tree will not exceed 10.Accepted 1.1M Submissions 1.6M Acceptance Rate 68.3% Topics TreeDepth-First SearchBinary Tree Companies Similar Questions Path Sum Easy Binary Tree Maximum Path ...
3112. 访问消失节点的最少时间 Minimum Time to Visit Disappearing Nodes 力扣 LeetCode 题解 11:01 2959. 关闭分部的可行集合数目 Number of Possible Sets of Closing Branches 力扣 LeetCode 题解 17:28 2956. 找到两个数组中的公共元素 Find Common Elements Between Two Arrays 力扣 LeetCode 题解 04:...
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The number of nodes in the tree is at most 10000. The final answer is guaranteed to be less than 2^31. 题意分析 这道题需要了解二叉搜索树的定义,以及递归/循环的知识。 我的实现及调优过程 方法1:356 ms 方法1我的思路是先看[L, R]这个range能不能卡住当前节点,即当前节点值v在[L,R]内。
The number of nodes in the tree is in the range [1, 100]. 0 <= Node.val <= 100 All the values in the tree are unique. Note: This question is the same as538 题目描述: 给定一个二叉搜索树 root (BST),请将它的每个节点的值替换成树中大于或者等于该节点值的所有节点值之和。