Binary Tree Zigzag Level Order Traversal 之字形层序遍历 LeetCode 199. Binary Tree Right Side View 找每一层的最右结点 LeetCode 515. Find Largest Value in Each Tree Row 计算每一层的最大值 LeetCode 637. Average of Levels in Binary Tree
广度优先搜索(BFS)🌐 简单难度 Maximum Depth of Binary Tree:二叉树的最大深度。 Minimum Depth of Binary Tree:二叉树的最小深度。 Maximum Depth of N-ary Tree:N叉树的最大深度。 中等难度 Binary Tree Level Order Traversal:二叉树的层序遍历。 Binary Tree Zigzag Level Order Traversal:二叉树的Z字形...
Given a binary tree, return thelevel ordertraversal of its nodes' values. (ie, from left to right, level by level). For example: Given binary tree[3,9,20,null,null,15,7], 3 / \ 9 20 / \ 15 7 return its level order traversal as: [ [3], [9,20], [15,7] ] 广度优先搜索...
Extra Space required for Level Order Traversal isO(w) where w is maximum width of Binary Tree. In level order traversal,queueone by one stores nodes of different level. Extra Space required for Depth First Traversals isO(h) where h is maximum height of Binary Tree. In Depth First Traversals...
4.Balanced Binary Tree - 判断平衡二叉树 DFS 5.Path Sum - 二叉树路径求和判断DFS 题目概述: Given a binary tree, return thelevel ordertraversal of its nodes' values. (ie, from left to right, level by level). For example: Given binary tree{3,9,20,#,#,15,7}, ...
问题1:Symmetric Tree 问题2:Vertical Order Traversal of a Binary Tree 问题3:Word Ladder 适用范围 当答案距离根节点近,并且可以一层一层进行探索的情况。 最短路径问题:BFS可以用于寻找无权图中两个节点之间的最短路径。由于BFS会逐层遍历图,因此当搜索到目标节点时,它一定是经过的最少边数的路径之一,因此可...
Binary Tree Level Order Traversal 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 tree [3,9,20,null,null,15,7], 代码语言:javascript ...
层次遍历从低往root结点输出,如Given binary tree{3,9,20,#,#,15,7}, 3 / \ 9 20 / \ 15 7 return its level order traversal as: [ [15,7], [9,20], [3] ] 最简单方法通过层次遍历BFS调用队列后逆序倒置vector容器即可。 /**
[leetcode] Binary Tree Zigzag Level Order Traversal | zigzag形状traverse树 Posted by: lexigrey on: October 19, 2013 In: leetcode Leave a Comment 树的dfs变形,还是两个list来回倒。但是这题上来就写还不行,真心得在纸上画一画才能看出来规律。一开始觉得keep一个boolean,正常顺序就加后面,逆序就...
给定一个二叉树,返回其按层次遍历的节点值。 (即逐层地,从左到右访问所有节点)。 代码语言:javascript \920/\157返回其层次遍历结果:[[3],9,20],[15 来源:力扣(LeetCode) 链接:https://leetcode-cn.com/problems/binary-tree-level-order-traversal 著作权归领扣网络所有。商业转载请联系官方授权,非商业转...