说明：  简单一元函数优化实例，利用遗传算法计算函数f(x)=x*sin(10pi*x)+2.0,-1<=x<=2的最大值
(One dollar a simple example of function optimization using genetic algorithm function f (x) = x* sin (10pi* x)+ 2.0,-1 <= x <= 2 the maximum value of)