【LeetCode】Binary Tree Level Order Traversal
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题目描述
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,#,#,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.
题目分析
树按层遍历
总结
使用队列代码示例
推荐学习C++的资料
C++标准函数库
http://download.csdn.net/detail/chinasnowwolf/7108919
在线C++API查询
http://www.cplusplus.com/
queue使用方法
http://www.cplusplus.com/reference/queue/queue/
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