2017年6月20日
101. Symmetric Tree 二叉树是否对称
摘要： Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center).For example, this binary tree [1,2,2,3,4,4,3] is symmetric: 1 / \ 2 2 / \ / \ 3 4 4 3 But the... 阅读全文
posted @ 2017-06-20 00:31 xiejunzhao 阅读(352) 评论(0) 推荐(0)