link:[https://leetcode.com/explore/learn/card/data-structure-tree/134/traverse-a-tree/928/] 递归解法: #Definition for a binary tree node.#class TreeNode(object):#def __init__(self, x):#self.val = x#self.left = None#self.right = NoneclassSolution(object):defsolve(self,root):ifroo...
观察发现对于每个node如果它在vertical level k上那它的左子树在level k-1, 右子树k+1. level order traverse的同时,多记录一栏track vertical order就好。 每个level用map来装,这样输出的时候自动按从左到右排好了。 面经:print the top view of a binary tree 实现:Time O(nlogn) BFS-n, map-logn Space...
问题链接 英文网站:199. Binary Tree Right Side View中文网站:199. 二叉树的右视图问题描述Given the root of a binary tree, imagine yourself standing on the right side of it, return the values of the n…
https://leetcode.com/problems/binary-tree-right-side-view/ https://leetcode.com/problems/number-of-islands/ https://leetcode.com/problems/average-of-levels-in-binary-tree/ https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree/ 8. Pattern: Tree Depth First Search,树上的DFS ...
LeetCode-Binary Tree Right Side View Description: Given a binary tree, imagine yourself standing on the right side of it, return the values of the nodes you can see ordered from top to bottom. Example: Input: [1,2,3,null,5,null,4]...
题目地址:https://leetcode.com/problems/binary-tree-right-side-view/description/ 题目描述: Given a binary tree, imagine yourself standing on the right side of it, return the values of the nodes you can see ordered from top to bottom. ...
Leetcode 199 Binary Tree Right Side View 二叉树 Given a binary tree, imagine yourself standing on the right side of it, return the values of the nodes you can see ordered from top to bottom. For example: Given the following binary tree, 1 <--- / \ 2 3 <--- \ \ 5 triplebee ...
94. Binary Tree Inorder Traversal Given a binary tree, return the inorder traversal of its nodes' values. For example: Given binary tree [1,null,2,3], 代码语言:javascript 复制 1\2/3 return [1,3,2]. Note: Recursive solution is trivial, could you do it iteratively?
一. 树 1）求二叉树的高度（Maximum Depth of Binary Tree）// LeetCode, Maximum Depth of Binary ...
0199 Binary Tree Right Side View Go 61.1% Medium 0200 Number of Islands Go 56.1% Medium 0201 Bitwise AND of Numbers Range Go 42.2% Medium 0202 Happy Number Go 54.3% Easy 0203 Remove Linked List Elements Go 44.7% Easy 0204 Count Primes Go 33.1% Medium 0205 Isomorphic Strings Go ...