Given a non empty binary tree, return the average value of the nodes on each level in the form of an array. Example : Note: The range of node s value is in the range of bit signed integer. 这道题让我们求一个二 ...
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Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level). For example:Given binary ...
Given a binary tree, return the bottom-up level order traversal of its nodes' values. (ie, from left to right, level by level from leaf to root ...
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 ...
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 ...
Print a binary tree in an m*n 2D string array following these rules: The row number m should be equal to the height of the given binary tree ...
Given a binary tree, return the tilt of the whole tree. The tilt of a tree node is defined as the absolute difference between the sum of all left ...
We are given the head node root of a binary tree, where additionally every node's value is either a 0 or a 1. Return the same tree where every ...
Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as: a binary tree ...
