Calculator

说明：  中小企业erp系统，java+spring+tomcat(xiaoqiye erp,java+spring+tomcat)

JTBC网站内容管理系统(MySQL) v2.0.0.1 JTBC网站内容管理系统(MySQL) v2.0.0.1 JTBC网站内容管理系统(MySQL) v2.0.0.1 JTBC网站内容管理系统(MySQL) v2.0.0.1 JTBC网站内容管理系统(MySQL) v2.0.0.1 JTBC网站内容管理系统(MySQL) v2.0.0.1 (JTBC Web content management system (MySQL) v2.0.0.1 JTBC Web content management system (MySQL) v2.0.0.1 JTBC Web content management system (MySQL) v2.0.0.1 JTBC Web content management system (MySQL) v2.0.0 .1 JTBC Web content management system (MySQL) v2.0.0.1 JTBC Web content management system (MySQL) v2.0.0.1)

说明：  冒险岛079服务器源码 冒险岛079服务器源码(sheng da maplestory079 fu wu duan yuan ma)

说明：  libdmtx库的使用及对data matrix码检测识别(Use of libdmtx library and detection and identification of data matrix code)

json(JavaScript Object Notation)的源代码，方便编写成格式(json (JavaScript Object Notation) the source code into a format to facilitate the preparation)

说明：  《Java程序设计经典教程》源代码，100 通过编译，是学习Java的好帮手(java)

机器学习中Perceptron算法统计词频(The statistics of words of perceptron algorithm in Machine Learning)

说明：  java基础学习资料（含Notepad++和源代码）(Java basic learning materials (including Notepad++ and source code))

mysql连接与读取，输入，输出，读写。(MYSQL JDBC)

实现扑克牌，一副牌中抽去大小王剩下52张（如果初练也可只用1～10这40张牌)，任意抽取4张牌（称牌组)，用加、减、乘、除（可加括号)把牌面上的数算成24。每张牌必须用一次且只能用一次，如抽出的牌是3、8、8、9，那么算式为（9-8)×8×3或3×8+（9-8)或（9- 8÷8)×3等。(In order to realize playing cards, 52 cards are removed from a deck (only 40 cards can be used for the first practice). Four cards are randomly selected (called card groups). The number on the deck is calculated as 24 by adding, subtracting, multiplying and dividing (brackets can be added). Each card must be used once and only once. If the drawn card is 3, 8, 8, 9, the formula is (9-8)*8*3 or 3*8+ (9-8) or (9-8 8)*3)