DateUtils

说明：  串口通信简单的，易懂适合小白，底层开始做(serial communication)

tsai C++实现,tsai C++实现 tsai C++实现 (Tiberius C realized, Tiberius achieve Tiberius C C C achieve Tiberius achieve realization Tiberius C)

集合的运算：交、并、补（难度系数：1.1） 全集：大写字母 ‘A’~’Z’ 要求实现以下功能： 1、集合的输入：自动去掉重复和非法的字符 2、集合的显示：输出集合的全部元素 3、输出一个给定集合的补集 4、输出两个给定集合的交集和并集 (jiao bing bu)

本程序主要包括振动信号采集，时域分析和频域分析等功能。(This program includes a vibration signal acquisition, time domain analysis and frequency domain analysis.)

客户服务器TCP/IP通信程序利用WINSOCK编程(client-server TCP/IP communications programming procedures using Winsock)

说明：  基于C++实现des加密算法,包含详细说明,基于C++实现des加密算法,(encryption algorithm, encryption algorithmencryption algorithm encryption algorithm)

在给定字符串中找出单词（ “单词”由小写字母字符大写字母和构成，其他非字母字符视为单词的间隔， 如、问空格号、数字等等；另外单个字母不算单词）；找到单词后，按照长度进行降序排序， （排序时如果长度相同，则按出现的顺序进行排列），然后输出到一个新的字符串中；如果某个单词重复出现多次， 则只输出一次；如果整个输入的字符串中没有找到单词，请输出空串。输出的单词之间使用一个“空格”隔开， 最后一个单词后不加空格。(Identify the word (" word" character from the uppercase and lowercase letters constituted, other non-alphabetic characters as word spacing, such as asking a space number, number, etc. another is not a single letter word) in a given string find words after descending order according to length, (if the same length, the order stated that appears when sorting arranged), and then output to a new string If a word is repeated several times, only output once If the entire input string is not found in word, outputs an empty string. Used between the output of a word " space" separated, no spaces after the last word.)

采用visual c++ 作为前台开发语言，sql server 2000 作为后台数据库开发的安全行业标准管理体系数据库，其功能强大！(The use of visual c++ As a front to develop language, sql server 2000 database development as a background security industry-standard database management system, its powerful!)

LibSVM代码注释，方便阅读和修改libsvm源码(LibSVM code comments, easy to read and modify the source code libsvm)

B curve left key point, right end vevr good(Curve B left key point, right end vevr good)