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...
LeetCode Top 100 Liked Questions 105. Construct Binary Tree from Preorder and Inorder Traversal (Java版; Medium) 题目描述 Given preorder and inorder traversal of a tree, construct the binary tree. Note: You may assume that duplicates do not exist in the tree. For example, given preorder ...
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...
Rename 67--subtree-of-another-tree.java to 66--subtree-of-another-tre… May 7, 2023 67--construct-binary-tree-from-preorder-and-inorder-traversal.java Create 67--construct-binary-tree-from-preorder-and-inorder-traversal.… May 7, 2023 ...
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...
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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...
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