https://leetcode.com/problems/validate-stack-sequences/ find out an element in the given sorted row and coloumn matrix. https://leetcode.com/problems/linked-list-cycle/ Top view of a binary Tree psuedo code for Topological sort Again two interviewers started from intro and explain one of yo...
https://leetcode.cn/problems/number-of-ways-to-reconstruct-a-tree 这道题曾经在周赛难度分top1呆了几年,如今已经不在难度分top5了。破局的关键是父节点的邻居数肯定不少于子节点,而根节点的邻居数一定是n-1。所以应该先找到根节点,然后逐层向下建树,子节点的邻居一定是父节点的子集,否则就是非法;如果子...
LeetCode Top 100 Liked Questions 297. Serialize and Deserialize Binary Tree (Java版; Hard) 题目描述 Serialization is the process of converting a data structure or object into a sequence of bits so that it can be stored in a file or memory buffer, or transmitted across a network connection l...
public void flatten(TreeNode root) { if(root==null) return; TreeNode curr = root; while(curr!=null){ //保存右子树, 后面用 TreeNode oldRight = curr.right; //左子树不为空, 执行一系列改变指向的操作 if(curr.left!=null){ //找到左子树的最右节点 TreeNode rightMost = curr.left; while(...
Expression Tree K distance from root Right View of Binary Tree Diameter of Binary Tree Delete nodes greater than or equal to k in a BST Reverse Level Order Traversal Diagonal Traversal of Binary Tree Leftmost and Rightmost Nodes of Binary Tree ...
10 phoenix_live_view 6464 983 Elixir 54 Rich, real-time user experiences with server-rendered HTML 2025-05-19T17:24:21Z Go This is top 10, for more click Top 100 Stars in Go RankingProject NameStarsForksLanguageOpen IssuesDescriptionLast Commit 1 awesome-go 143945 12297 Go 5 A curated li...
Given a binary tree, find the maximum path sum. For this problem, a path is defined as any sequence of nodes from some starting node to any node in the tree along the parent-child connections. The path does not need to go through the root. ...
Paddle 11.8k PArallel Distributed Deep LEarning: Machine Learning Framework from Industrial Practice (『飞桨』核心框架,深度学习&机器学习高性能单机、分布式训… tensorflow-zh 11.8k 谷歌全新开源人工智能系统TensorFlow官方文档中文版 darknet 11.4k YOLOv4 - Neural Networks for Object Detection (Windows and Lin...
Well, in the case of HashSet a dummy object is used as a value and key objects are the actual element on Set point of view. Since HashMap doesn't allow duplicate keys it also follows the contract of set data structure to not allow duplicates. See detailed answers for more analysis and...
LeetCode Top 100 Liked Questions 236. Lowest Common Ancestor of a Binary Tree (Java版; Medium) 题目描述 Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. According to the definition of LCA on Wikipedia: “The lowest common ancestor is defined betw...