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 related questions after that he asked me a coding question on DP which was very t...
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...
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(...
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 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...
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-...
本issue的目的是「注明每道题目的来源」 若您想查看汇总好的题目,您可以在README的字节跳动查看最终结果 7.28~9.1面试考察的题目 您也可以在https://leetcode-cn.top 更方便的查询 公司 岗位 链接 日期 题目描述 字节跳动 客户端 https://www.nowcoder.com/discuss/495788
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...tcp...
本文介绍一下2015 ImageNet中分类任务的冠军——MSRA何凯明团队的Residual Networks。实际上。MSRA是今年Imagenet的大赢家。不单在分类任务,MSRA还用residual networks赢了 ImageNet的detection, localization, 以及COCO数据集上的detection和segmentation, 那本文就简单分析下Residual Networks。