一个具有普遍的应用型的遗传算法代码，只要改变目标函数以及一定的条件，就可实现。本代码以求取二次函数的最大值为例编写-A universal application-oriented genetic algorithm code, as long as the objective function as well as changes in certain conditions, can be achieved. The code to strike a maximum of a quadratic function for example writing