摘要：
Given acompletebinary tree, count the number of nodes.Definition of a complete binary tree fromWikipedia:In a complete binary tree every level, except... 阅读全文
posted @ 2015-08-07 17:46 骄阳照林 阅读(170) 评论(0) 推荐(0) 编辑
摘要：
Implement a basic calculator to evaluate a simple expression string.The expression string may contain open(and closing parentheses), the plus+or minus... 阅读全文
posted @ 2015-08-07 16:34 骄阳照林 阅读(144) 评论(0) 推荐(0) 编辑