标签：ati node example return div form exp nat val
Given a non-empty binary tree, return the average value of the nodes on each level in the form of an array.
Example 1:
Input:
3
/ 9 20
/ 15 7
Output: [3, 14.5, 11]
Explanation:
The average value of nodes on level 0 is 3, on level 1 is 14.5, and on level 2 is 11. Hence return [3, 14.5, 11].
Note:
s
[LeetCode] Average of Levels in Binary Tree 二叉树的平均层数
标签：ati node example return div form exp nat val
原文地址：http://www.cnblogs.com/grandyang/p/7259209.html
