Given a binary treewhere every node has a unique value, and a target keyk, find the value of the nearest leaf node to targetkin the tree. Here,nearestto a leaf means the least number of edges travell ...
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We are given a binary tree (with root node `root`), a `target` node, and an integer value `K`. Return a list of the values of all nodes that have ...
Given a non-empty special binary tree consisting of nodes with the non-negative value, where each node in this tree has exactly two or zero ...
Given a binary tree, collect a tree's nodes as if you were doing this: Collect and remove all leaves, repeat until the tree is empty. Example ...
在写这篇文章之前说一下数据结构和算法这个系列，这个系列包含了很多东西，比如啥子排序，线性表，广义表，树，图这些大家都是知道的，但是这些东西我们学了之后工作中能用到的又有多少呢，据我所知绝大部分公司，一 ...
Invert a binary tree. to Trivia: This problem was inspired by this original tweet by Max Howell: Google: 90% of our engineers use ...
Given a binary tree, return the values of its boundary in anti-clockwise direction starting from root. Boundary includes left boundary, leaves ...
们一个二叉树，让我们返回所有根到叶节点的路径，跟之前那道Path Sum II很类似，比那道稍微简单一些， ...
Given a binary tree, return the values of its boundary in anti-clockwise direction starting from root. Boundary includes left boundary ...
