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}, 3 / \ 9 20 / \ 15 7return its level order traversal as:[ [3], [9,20], [15,7]]confused what"{1,#,2,3}"means?> read more .
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2013-11-16 05:18:00
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Test:
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2019-08-11 22:01:00
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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）。 例如:给定二叉树: [3,9,20,null,null,15,7], 返回其层次遍历结果：
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2022-01-17 16:45:41
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Given a binary tree, return thelevel ordertraversal of its nodes' values. (ie, from left to right, level by level).For example:Given binary tree{3,9,2...
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2014-11-15 16:47:00
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Binary Tree Level Order TraversalGiven a binary tree, return thelevel ordertraversal of its nodes' values. (ie, from left to right, level by level).Fo...
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2021-08-07 11:42:05
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Given a binary tree, return thezigzag level ordertraversal of its nodes' values. (ie, from left to right, then right to left for the next level and al...
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2015-12-27 17:53:00
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Given a binary tree, return thelevel ordertraversal of its nodes' values. (ie, from left to right, level by level).For example:Given binary tree{3,9,2...
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2014-06-23 13:55:00
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Best approach: 把树看成一个有向图，进行BFS。BST的通常做法都是维护一个队列。这道题的难度在于，如何在队列不断的入队出队操作中，确定哪些node是一个层次的。想了很久没什么好办法，参考了网上的做法，发现他在维护两个数：一个是父节点所在层次的节点在当前队列中的数目ParentNumI
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2014-09-15 12:52:00
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Given a binary tree, return thebottom-up level ordertraversal of its nodes' values. (ie, from left to right, level by level from leaf to root).For exa...
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2014-11-15 17:03:00
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题目：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,#,#,15,7}, 3 / \ 9 20
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2022-08-01 12:24:05
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用队列层次遍历/** * Definition for a binary tree node. * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x), left(NULL), right(NULL) {} * };...
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2023-01-11 12:00:14
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Question Given a binary tree, return the level order traversal of its nodes’ values. (ie, from left to right, level by level).For example: Given
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2023-02-02 14:49:35
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每日一练，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,#,#,15,7}, 3
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2015-01-04 23:16:48
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Given a binary tree, return thelevel ordertraversal of its nodes' values. (ie, from left to right, level by level).For example:Given binary tree{3,9,2...
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2014-06-12 11:07:00
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function Node(val) { return { val, left: null, right: null }; } function Tree() { return { root: null, addLeft(val, root) { const newNode = Node(val); root.lef...
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2019-04-11 21:24:00
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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 tree {
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2017-05-05 18:17:00
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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}, 3 / \ 9 20 / \ 15 7 return its level order traversal as: [ [3], [9,20], [15,7]]confused what"{1,#,2,3}"means?> read ..
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2013-07-01 20:45:00
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题目描写叙述 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).For example:
Given binary tree {3,9
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2016-03-25 09:03:00
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Given a binary tree, return the level order traversal of its nodes’ value
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2022-12-01 19:04:23
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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). For
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2016-03-08 12:55:00
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