摘要: Given a non-empty binary tree, return the average value of the nodes on each level in the form of an array. Example 1: Note: 思路:首先要使用层次遍历,因为每次遍历后要计算对应 阅读全文
posted @ 2017-09-01 07:47 白常福 阅读(158) 评论(0) 推荐(0) 编辑