中文说明：最基本的粒子群优化算法程序，用Matlab实现，非常简单。是主函数的源程序，优化函数则以m文件的形式放在fitness.m里面，对不同的优化函数只要修改fitness.m就可以了通用性很强。
English Description：
Particle Swarm Optimization algorithm for the most basic procedures, using Matlab to realize, is very simple. Is the main function of the source, the optimized function is in the form of m files inside fitness.m, different optimization function, just modify the fitness.m versatility is very strong.