For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees ofeverynode never differ by more than 1. 解题思路1(下面给出两种代码实现,代码1和代码2):采用递归的方法,对每一层的节点进行遍历,从叶子节点开始回溯,并从下往上判断每一层的各个...
/*** Definition for a binary tree node. * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * TreeNode(int x) { val = x; } * }*/classSolution {publicbooleanisBalanced(TreeNode root) {if(root ==null) {returntrue; }intleftDepth =subTreeDepth(root.left);in...
Can you solve this real interview question? Balanced Binary Tree - Given a binary tree, determine if it is height-balanced. Example 1: [https://assets.leetcode.com/uploads/2020/10/06/balance_1.jpg] Input: root = [3,9,20,null,null,15,7] Output: tru
Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as: a binary tree in which the depth of the two subtrees of every node never differ by more than 1. Example 1: Given the following tree [3,9,20,null,null,15,7]: ...
For this problem, a height-balanced binary tree is defined as:a binary tree in which the left and right subtrees of every node differ in height by no more than 1. 英文版地址 leetcode.com/problems/b 中文版描述 给定一个二叉树,判断它是否是高度平衡的二叉树。本题中,一棵高度平衡二叉树定义...
For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of every node never differ by more than 1. 题目分析: 平衡二叉树:(1)要么为空,要么左右子树的深度差值不超过1;(2)左右两个子树都是一棵平衡二叉树,即子树也都要都满足条件(1...
Given a binary tree, determine if it is height-balanced. every 思路: 根据结点高度,递归判断是否满足平衡树定义。此题跟Kth Smallest Element in a BST做法类似,在遍历过程中遇到满足某条件的结点时,将结果放到全局变量中,如果没遇到最终递归返回的就是全局变量的初始值,否则返回的变化后的值。 就像一个开关,...
LeetCode 110. Balanced Binary Tree 简介:给定一颗二叉树,判断此树是不是平衡二叉树.平衡二叉树的条件是:当前节点的左右子树高度差不超过1,且左右子树都是平衡二叉树. Description Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as:...
简介:要求:判断一棵树是否是平衡二叉树 Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as a binar... 要求:判断一棵树是否是平衡二叉树 Given a binary tree, determineifitisheight-balanced. ...
Can you solve this real interview question? Balance a Binary Search Tree - Given the root of a binary search tree, return a balanced binary search tree with the same node values. If there is more than one answer, return any of them. A binary search tree