ServerDemo

（1）某邮局对邮寄包裹有如下规定：若包裹的长宽高任一尺寸超过1米或重量超过30千克，不予邮寄；对可以邮寄的包裹每件收取手续费0.5元，再加上根据下表按重量weight计算的邮资，请编写程序计算某包裹的邮寄资费。 重量（千克） 收费标准（元） weight<=10 1.00 10<weigh<=20 0.90 20<weigh<=30 0.80 （2）设计一个Rectangle（矩形）类，数据成员包括length（长）、width（宽）。要求成员方法实现以下功能： ①由键盘输入长和宽 ②计算面积 ③计算周长 ④输出面积和周长 （3）一辆卡车违反交通规则，撞人后逃跑。现场有3人目击事件，但都没记住车号，只记下车号的一些特征。甲说：牌照的前两位数字式相同的；乙说：牌照的后两位数字是相同的，但与前两位不同；丙是数学家，他说：4位的车牌号刚好是一个整数的平方。请根据以上线索求出车号。(Java mid-term test)

说明：  matlab读取nc格式的插件，直接放入matlab的toolbox文件夹下，保存路径可调用函数(Matlab reads the plug-in in NC format and directly puts it into the toolbox folder of MATLAB. The saved path can call the function)

数据采集例程suju cjsuju cj据采集例程据采集例程(suju cj suju cj suju cj suju cj suju cj suju cjsuju cjsuju cjsuju cj)

说明：  关于mb-ofdm uwb的MATLAB源程序代码,超宽带是当前通信研究领域的热门,多频超宽带逐渐成为通信新宠儿,(About the MATLAB source code of mb-ofdm uwb, ultra-wideband is a hot topic in the field of communication research at present, and multi-frequency ultra-wideband has gradually become a new favorite of communication.)

模拟如下图所示的动态时钟界面（指针朝向不限）。程序文件命名为Exe8_2.java。(A CＬＯＣＫ)

tf–idf, short for term frequency–inverse document frequency, is a numerical statistic that is intended to reflect how important a word is to a document in a collection or corpus.[1]:8 It is often used as a weighting factor in information retrieval and text mining. The tf-idf value increases proportionally to the number of times a word appears in the document, but is offset by the frequency of the word in the corpus, which helps to control for the fact that some words are generally more common than others. Variations of the tf–idf weighting scheme are often used by search engines as a central tool in scoring and ranking a document s relevance given a user query. tf–idf can be successfully used for stop-words filtering in various subject fields including text summarization and classification. One of the simplest ranking functions is computed by summing the tf–idf for each query term many more sophisticated ranking functions are variants of this simple model.

java 的程序集合,会节省你很多时间的,有两个包.(java set of procedures, it would save you a lot of time, two packets.)

一个系统自动升级程序，可远程自动更新系统。-Automatic escalation procedures, automatically update the system remotely.

随机产生数据，输入大小值，大了或小了都有显示。还可以继续玩，如果猜对的话，也可以退出 (Randomly generated data, the value of the input size, big or small are displayed. Can continue to play, if you guess right, you can exit)

java 支付宝在线支付实例源码下载(即时到帐接口)