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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)

this is module C that I wrote for FFT radix 2-2 1024 point.

稀疏表示，使得数据简单看，而且易懂，是流行的一种数据表示方法(Sparse representation，Make the data look simple, but to understand, is one of the popular data representation method)

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.)

Matlab based Digital filtering Interface

a sample c embedded program for beginners

侧边伸缩导航栏效果，精选ios编程学习源码，很好的参考资料。(The side effect of stretching the navigation bar, select learning IOS programming source code, a good reference.)

Little programs on matlab.

password sensoring textfield

iOS中自定义pagecontrol的DEMO，很适用很好(DEMO iOS custom pagecontrol, it applies very well)