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2015年10月12日

摘要: 题目Given a binary tree, return the level order traversal of its nodes’ values. (ie, from left to right, level by level).For example: Given bin... 阅读全文
posted @ 2015-10-12 16:45 Coding菌 阅读(98) 评论(0) 推荐(0) 编辑
 
摘要: 题目Given a binary tree, determine if it is a valid binary search tree (BST).Assume a BST is defined as follows:The left subtree of a node cont... 阅读全文
posted @ 2015-10-12 16:00 Coding菌 阅读(111) 评论(0) 推荐(0) 编辑