有意思的题目,给出两个自动机,判断这个两个自动机是否是等价的? 两个自动机是等价的,那么他们可接受的字符串集合一定是完全一样的. 于是我们可以从(0,0)开始bfs,每次看看在两个自动机上走到的两个点儿子指针以及终态信息是否完全一致,是的话就把所有儿子指针都拉到队列中进行后面的判断. 由于我们对于每一个二元组,最多只需要判断一次,显然时间复杂度就不会超过n^2了. 不过我个人觉得题目好像有些问题,在题目给出的数据中,自动机可能存在一些“不合法”的状态,什么意思呢?就是说有的状态,在它的所有后继状…

2014/8/1 12:24:21潘加宇 http://www.umlchina.com/News/Content/340.htmPloP大会2014即将举行 PLoP(Pattern Languages of Programs,程序设计的模式语言) 会议由Hillside Group主办,是软件模式领域最重要的会议.第一届会议于1994年举办,2014年是第21届,将于9月14-17日在Allerton Park举行. 说起模式,被人提起最多的是GoF的23个模式,甚至很多人误解模式就是GoF…

More descriptive way to declare and use a method in programming languages At present, in most programming language, a method is declared in few parts: keyword, method name, method parameters and return type etc. E.g. function int add(int a, int b) \\…

目录 . 漏洞描述 . 漏洞触发条件 . 漏洞影响范围 . 漏洞代码分析 . 防御方法 . 攻防思考 1. 漏洞描述 对于很多CMS网站来说,它们都需要保存很多的网站META信息,最常用的最佳实践是以变量声明的形式保存在.php文件中,在需要的时候直接include进来,PHP File Loader会自动将引入文件中的变量注册到当前的代码空间中,供其他的代码直接引用.例如 . phpmyadmin使用config/config.inc.php保存phpmyadmin的配置信息:phpmyadm…

传送门 The Enterprise has encountered a planet that at one point had been inhabited. The only remnant from the prior civilization is a set of texts that was found. Using a small set of keywords found in various different languages, the Enterprise team i…

Computer Science An Overview _J. Glenn Brookshear _11th Edition A subset of the imperative programming languages is the collection of languages known as scripting languages. These languages are typically used to perform administrative tasks rather th…

1. Detecting Languages During Indexing 在索引的时候,solr可以使用langid UpdateRequestProcessor来识别语言,然后映射文本到特定语言的字段.solr支持这个功能的两个实现: Tika的语言解析功能:http://tika.apache.org/0.10/detection.html LangDetect语言解析:http://code.google.com/p/language-detection/ 可以从 http://blo…

In this video from JAOO Aarhus 2008 Anders Hejlsberg takes a look at the future of programming languages and sees the trends; declarative, dynamic and concurrent. As the chief designer of the C# programming language and a key participant in the devel…

Languages A language class exists inside the system/Core folder, this class have 2 methods: load - Loads the language file, can return the data and set the language to use get - return a language string if it exists, else it will return the value pas…

3296: [USACO2011 Open] Learning Languages Time Limit: 5 Sec  Memory Limit: 128 MBSubmit: 81  Solved: 39[Submit][Status] Description 农夫约翰的N(2 <= N<=10,000)头奶牛,编号为1.. N,一共会流利地使用M(1<= M <=30,000)种语言,编号从1 .. M.,第i头,会说K_i(1 <= K_i<= M)种语言,即L_…