看代码之前，请先弄明白pso是怎么回事。然后请对应着来：程序中用Agent代表一只鸟，PSO代表鸟群。阅读源代码，不要顺着看，先看main(),然后按照出现的东西的顺序，一个一个得来，呵呵，纯粹是建议。-Before looking at the code, you figure out how it pso. Then please correspond to: Program Agent on behalf of a bird, PSO representative of the flock