563. Binary Tree Tilt】的更多相关文章

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 subtree node values and the sum of all right subtree node values. Null node has tilt 0. The tilt of the …
https://leetcode.com/problems/binary-tree-tilt/description/ 挺好的一个题目,审题不清的话很容易做错.主要是tilt of whole tree 的定义是sum of all node's tilt 而不是想当然的tilt of root. 一开是我就以为是简单的tilt of root 导致完全错误.思路其实可以看作是求sum of children 的变种,只是这里不仅要跟踪每个子树的sum 还要累计上他们的tilt. /** * D…
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 subtree node values and the sum of all right subtree node values. Null node has tilt 0. The tilt of the …
[抄题]: 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 subtree node values and the sum of all right subtree node values. Null node has tilt 0. The tilt o…
Given the root of a binary tree, return the sum of every tree node's tilt. The tilt of a tree node is the absolute difference between the sum of all left subtree node values and all right subtree node values. If a node does not have a left child, the…
作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 Java解法 Python解法 日期 题目地址:https://leetcode.com/problems/binary-tree-tilt/#/description 题目描述 Given a binary tree, return the tilt of the whole tree. The tilt of a tree node is def…
563. 二叉树的坡度 563. Binary Tree Tilt 题目描述 给定一个二叉树,计算整个树的坡度. 一个树的节点的坡度定义即为,该节点左子树的结点之和和右子树结点之和的差的绝对值.空结点的的坡度是 0. 整个树的坡度就是其所有节点的坡度之和. 每日一算法2019/6/10Day 38LeetCode563. Binary Tree Tilt 示例: 输入: 1 / \ 2 3 输出: 1 解释: 结点的坡度 2 : 0 结点的坡度 3 : 0 结点的坡度 1 : |2-3| = 1…
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 subtree node values and the sum of all right subtree node values. Null node has tilt 0. The tilt of the …
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 subtree node values and the sum of all right subtree node values. Null node has tilt 0. The tilt of the …
原题链接在这里:https://leetcode.com/problems/binary-tree-tilt/description/ 题目: 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 subtree node values and the sum…
这是悦乐书的第263次更新,第276篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第130题(顺位题号是563).给定二叉树,返回整棵树的倾斜度.树节点的倾斜被定义为所有左子树节点值的总和与所有右子树节点值的总和之间的绝对差. 空节点倾斜0.整棵树的倾斜度定义为所有节点倾斜的总和.例如: 输入: 1 / \ 2 3 输出:1 说明:节点2的倾斜度为0,节点3的倾斜度为0,节点1的倾斜:| 2-3 | = 1,二叉树的倾斜:0 + 0 + 1 = 1. 注意: 任何子…
1.题目描述 2.分析 利用递归实现. 3.代码 int findTilt(TreeNode* root) { if (root == NULL) ; ; nodesTilt(root,ans); return ans; } int nodesTilt(TreeNode *root, int & ans) { if (root == NULL) ; int tiltleft = nodesTilt(root->left, ans); int tiltright = nodesTilt(roo…
给定一个二叉树,计算整个树的坡度. 一个树的节点的坡度定义即为,该节点左子树的结点之和和右子树结点之和的差的绝对值.空结点的的坡度是0. 整个树的坡度就是其所有节点的坡度之和. 示例: 输入: 1 / \ 2   3 输出: 1 解释: 结点的坡度 2 : 0 结点的坡度 3 : 0 结点的坡度 1 : |2-3| = 1 树的坡度 : 0 + 0 + 1 = 1 注意: 任何子树的结点的和不会超过32位整数的范围. 坡度的值不会超过32位整数的范围. class Solution { publ…
二叉树基础 满足这样性质的树称为二叉树:空树或节点最多有两个子树,称为左子树.右子树, 左右子树节点同样最多有两个子树. 二叉树是递归定义的,因而常用递归/DFS的思想处理二叉树相关问题,例如LeetCode题目 104. Maximum Depth of Binary Tree: // 104. Maximum Depth of Binary Tree int maxDepth(TreeNode* root) { ; +max(maxDepth(root->left),maxDepth(roo…
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 subtree node values and the sum of all right subtree node values. Null node has tilt 0.The tilt of the wh…
二叉树(Binary Tree)是最简单的树形数据结构,然而却十分精妙.其衍生出各种算法,以致于占据了数据结构的半壁江山.STL中大名顶顶的关联容器--集合(set).映射(map)便是使用二叉树实现.由于篇幅有限,此处仅作一般介绍(如果想要完全了解二叉树以及其衍生出的各种算法,恐怕要写8~10篇). 1)二叉树(Binary Tree) 顾名思义,就是一个节点分出两个节点,称其为左右子节点:每个子节点又可以分出两个子节点,这样递归分叉,其形状很像一颗倒着的树.二叉树限制了每个节点最多有两个子节…
题目链接:Balanced Binary Tree | LeetCode OJ 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 tha…
Sept. 13, 2015 Spent more than a few hours to work on the leetcode problem, and my favorite blogs about this problems: 1. http://siddontang.gitbooks.io/leetcode-solution/content/tree/construct_binary_tree.html 2.http://blog.csdn.net/linhuanmars/artic…
Given a binary tree, find all leaves and then remove those leaves. Then repeat the previous steps until the tree is empty. Example: Given binary tree 1 / \ 2 3 / \ 4 5 Returns [4, 5, 3], [2], [1]. Explanation: 1. Remove the leaves [4, 5, 3] from the…
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Serialization is the process of converting a data structure or object into a sequence of bits so that it can be stored in a file or memory buffer, or transmitted across a network connection link to be reconstructed later in the same or another comput…
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