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说明：  一个非常简单的日历程序，可以作为插件使用(a simple calendar code)

How to check the url connections. Pretty straight forward.

二维码编码，QR码实现，Two-dimensional coding, QR code to achieve, Two-dimensional coding(Two-dimensional coding, QR code to achieve, Two-dimensional coding)

matlab实现的中国邮路问题，寻找可能的欧拉环游，(matlab realize the Chinese Postman Problem, looking for possible Eulerian tour,)

Navigation bar example

自定义风格的SegmentedControl，IOS编程学习源码，很好的参考资料。(A custom style SegmentedControl, learning IOS programming source code, a good reference.)

An IOS sample Program

产生两不迥频率的信号，并对两信号作复数FFT变换，找出频率为50Hz的信号对其进行能量计算(Two distant signal is not generated frequency, and two signals for complex FFT transform to identify the frequency of 50Hz signal to calculate its energy)

说明：  数学建模中的图论知识来研究最短路径的问题，利用Dijkstra算法matlab实现(Graph theory knowledge in mathematical modeling is used to study the shortest path problem, which is realized by using Dijkstra algorithm matlab.)

一小例子，关于tableview的，如下 (A small example, on the tableview, as follows)