2017年2月19日
Leetcode 331. Verify Preorder Serialization of a Binary Tree
摘要： One way to serialize a binary tree is to use pre-order traversal. When we encounter a non-null node, we record the node's value. If it is a null node, 阅读全文
posted @ 2017-02-19 12:43 lettuan 阅读(141) 评论(0) 推荐(0) 编辑