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 your most challenging project.some project
LeetCode Top 100 Liked Questions 543. Diameter of Binary Tree (Java版; Easy) 题目描述 Given a binary tree, you need to compute the length of the diameter of the tree. The diameter of a binary tree is the length of the longest path between any two nodes in a tree. This path may or...
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...
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 a node to be a descendant of itself).” Given the following binary tree: root = [3,5,1...
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 Queue Coding Problems Linked list Coding Problems ...
leetcode -124. Binary Tree Maximum Path Sum 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...
0218-The-Skyline-Problem 0219-Contains-Duplicate-II 0220-Contains-Duplicate-III 0222-Count-Complete-Tree-Nodes 0224-Basic-Calculator 0225-Implement-Stack-using-Queues 0226-Invert-Binary-Tree 0227-Basic-Calculator-II 0230-Kth-Smallest-Element-in-a-BST 0232-Implement-Queue-...
198 Binary Tree Right Side View C++ Python Note Medium 199 Number of Islands C++ Python Note Medium 200 Bitwise AND of Numbers Range C++ Python Note Medium 201 Happy Number C++ Python Note Easy 202 Remove Linked List Elements C++ Python Note Easy 203 Count Primes C++ Python Note Easy...
leetcode 1008 Construct Binary Search Tree from Preorder Traversal 1.题目描述 2.解题思路 3.Python代码 1.题目描述 返回与给定先序遍历 preorder 相匹配的二叉搜索树(binary search tree)的根结点。 (回想一下,二叉搜索树是二叉树的一种,其每个节点都满足以下规则,对于 node.left 的任...android...
One more question to test the problem-solving skill of the candidate. You wouldn't expect these kinds of questions in the telephonic round of Java interviews but these questions have now become norms. All interviewer is looking it for logic, you don't need to write the code but you should...