leetcode--Binary Tree Level Order Traversal
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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 {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 more on how binary tree is serialized on OJ.
题意:给定二叉树。返回每层的节点值,从左到右。
分类:二叉树
解法1:层次遍历。
解法2:思路和解法1一样,只是代码更加简洁。
原文链接http://blog.csdn.net/crazy__chen/article/details/46378491
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