https://leetcode.com/problems/add-and-search-word-data-structure-design/,Addand Search Word - Data structure design,2 https://leetcode.com/problems/reverse-linked-list/,ReverseLinked List,2 https://leetcode.com/problems/number-of-islands/,Numberof Islands,3 https://leetcode.com/problems/bes...
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...
Design an algorithm to serialize and deserialize a binary tree. There is no restriction on how your serialization/deserialization algorithm should work. You just need to ensure that a binary tree can be serialized to a string and this string can be deserialized to the original tree structure. Ex...
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 between two nodes p and q as the lowest node in T that has both p and q as descendants (where we allow...
Maximum path sum in a binary tree Preorder to Postorder of BST Check Mirror in N-ary Tree Count Number of Nodes in a Complete Binary Tree (Leetcode Problem Solution) Stack Coding Problems Number following the pattern Print bracket number ...
10 phoenix_live_view 6435 972 Elixir 54 Rich, real-time user experiences with server-rendered HTML 2025-04-11T10:16:28Z Go This is top 10, for more click Top 100 Stars in Go RankingProject NameStarsForksLanguageOpen IssuesDescriptionLast Commit 1 awesome-go 141707 12207 Go 5 A curated li...
0559-Maximum-Depth-of-N-ary-Tree 0561-Array-Partition-I 0563-Binary-Tree-Tilt 0572-Subtree-of-Another-Tree 0583-Delete-Operation-for-Two-Strings 0589-N-ary-Tree-Preorder-Traversal 0590-N-ary-Tree-Postorder-Transversal 0598-Range-Addition-II 0599-Minimum-Index-Sum-o...
what is the value in the case of HashSet? 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 ...
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. ...
lightfm 3.2k A Python implementation of LightFM, a hybrid recommendation algorithm. machine-learning 3.2k Content for Udacity's Machine Learning curriculum skflow 3.2k Simplified interface for TensorFlow (mimicking Scikit Learn) for Deep Learning Tensorflow-Project-Template 3.2k A best practice for tenso...