思想：进化理论，优胜劣汰

过程：初始化一种群，生宝宝，淘汰差的，保留优的且让它繁殖。

算法框架：

• def F(x): return np.sin(10*x)*x + np.cos(2*x)*x # to find the maximum of this function

• def get_fitness(pred): # find non-zero fitness for selection

• def translateDNA(pop): # convert binary DNA to decimal

• def select(pop, fitness): # nature selection wrt pop's fitness

• def crossover(parent, pop): # mating process 1 (genes crossover)

• def mutate(child): # mating process 2