sysyem

说明：  一些小程序，希望能和大家一块分享，还希望大家能多多帮助阿以后(some small procedures, and we hope a share, but also hope that we can help a lot after A)

属于C++里继承与派生类的小程序，主要是多层派生里的指针继承问题，仅供参考(Belonging C++ inheritance and derived classes in a small program, mainly derived pointers in multilayer succession for reference purposes only)

实现了创建合同,修改合同,删除合同,合同收款提醒,()

互补滤波算法解析，利用加速度计和陀螺仪采集的数据，通过互补滤波算法实现对姿态的解算。(Complementary filtering algorithm analysis, the use of accelerometers and gyroscopes data collected through the complementary filter algorithm for solving attitude.)

实现拓扑生成，平台为VC++6.0，自己编写的，可用(Achieve topology generation, platform VC++6.0, and I have written, can be used)

sar图像去噪的几种新的方法，有PMUSIC 校正前和校正后的比较，小波包分析提取振动信号中的特征频率。( Several new methods sar image denoising, A relatively before correction and after correction PMUSIC, Wavelet packet analysis to extract vibration signal characteristic frequency.)

some different types of VOF codes

给定一组物品，每种物品都有自己的重量和价格，在限定的总重量内，我们如何选择，才能使得物品的总价格最高(Given a set of items, each item has its own weight and price, within a limited total weight, what we choose to make the total price of the highest items)

在MATLAB中读取或写入HTML5规范的网页数据，凭借这几个函数可以创建网页文件或进行网页爬取。使用时用M语言生成html文件，用浏览器打开可以看到效果。(In MATLAB to read or write the HTML5 specification of Web data, by virtue of these functions can create web files or web crawling. When using M language to generate HTML files, with the browser open to see the effect)

说明：  输入一段字符串 统计其中各类字符的数量（数字类 字母类 空格 其他）并输出(Enter a string in which all kinds of statistics on the number of characters (the number of types of letters of other types of spaces) and output)