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c4.5完整代码，可运行实现。！！！！！！！！！！！！！(C4.5 complete code, can be run to achieve.!!!!!!!!!!!!!!)

数据结构 二叉树 前序遍历 中序遍历 后序遍历 结点(Pre-order traversal binary tree data structure in-order traversal post-order traversal node)

java软件设计建造模式实例.software design pattern java example of the construction.(software design pattern java example of the construction. software design pattern java example of the construction.)

支持向量机SVM的SMO算法的JAVA实现版本, 有线性内核和非线性BRF两个内核的算法(The SMO support vector machine SVM algorithm JAVA implementation version, linear and non-linear BRF two core kernel algorithm)

txt版 超级方便 可放到手机或mp4上阅读(txt version of super-convenient place to read cell phone or mp4)

在java中实现2个线程之间的死锁,即程序始终不终止,但也仍在运行()

说明：  利用jfinal+layui实现后台管理系统，页面清晰美观，非常好用(Using jfinal + layui to realize the background management system, the page is clear and beautiful, very easy to use)

说明：  java系列编程中的mybatis练习，mybatis小练习(Mybatis exercise in java series programming)

3.设计一个能够描述点（point）、线(line)、圆（circle）、矩形（rectangle）和三角形（triangle）等几何形状的类体系，能够计算不同形状的周长和面积（如果能够定义的话）。程序文件命名为Exe3_3.java。(3. Design a point can be described (point), line (line), circle (circle), class hierarchy rectangle (rectangle) and the triangle (triangle) and other geometric shapes, different shapes can calculate perimeter and area (if you can define if). Program file named Exe3_3.java.)

java swing develop the manage system,very good(java swing develop the manage system)