ziwang

说明：  北京大学ACM竞赛试题集锦，希望对你的编程能力因为它而更上一层楼，它的算法设计方面很有帮助对你(Beijing University ACM Collection questions, and I hope to your programming capability because it is being, it's helpful in the design of algorithms to you)

门禁系统韦根协议实现代码，亲自连接门禁控制器测试通过。(Wiegand protocol access control system code, personally connected access controller test.)

画图程序，可以话直线，矩形，圆，椭圆和多边形(Paint program, you can, then straight, rectangular, round, oval and polygon)

说明：  ucos ii 系统在stm32上的应用，本样例为ucos ii 任务调度部分代码，经开发板验证可用，欢迎下载。(UCOS II system in STM32 application, this example is UCOS II task scheduling part of the code, validated by the development board available, welcome to download.)

说明：  trading necessary source code

说明：  these codes are about three phase

说明：  使用c#开发的简易聊天室，目前版本已经到了2.0了(Simple chat room developed with C # has reached 2.0)

说明：  用编程语言c++实现的二叉排序树，二叉树，冒泡排序，希尔排序(Binary Sorting Tree, Binary Tree, Bubble Sorting, Hill Sorting Realized by C++ Programming Language)

vc++制作串口调试助手，用vc6.0开发环境，一步一步教大家制作串口调试助手(vc++ production serial debugging assistant with vc6.0 development environment, step by step teach you making serial debugging assistant)

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)