说明：  基础粒子群算法、改进粒子群算法（不包含适应度函数），可以用作基础代码理解粒子群算法的基本内涵，可以在此基础上添加杂交、变异等遗传算法的内容
(Basic particle swarm optimization algorithm (not including fitness function) can be used as basic code to understand the basic connotation of particle swarm optimization algorithm. On this basis, the content of genetic algorithm such as hybridization and mutation can be added)