说明：  两个例子的代码的主要区别在CalFitness.m和PlotModel.m中，其余的通用。 第一个例子，求解` z=sinx+cosy+0.1(x+y) `的最大值，CalFitness.m和PlotModel.m中对应的都是注释部分 第二个例子，给出了一系列点，利用欧式距离公式` min d=\sum_{i=1}^{10}\sqrt{(x_0-x_i)^2+(y_0-y_i)^2} `求解一系列点中的某个点，这个点到其余所有点的距离最小,直接运行就是这个问题的解。
(The main difference between the code for the two examples is in CalFitness.m and PlotModel.m, and the rest are generic. In the first example, the maximum value of `z=sinx+cosy+0.1(x+y)` is solved, and the corresponding parts in CalFitness.m and PlotModel.m are comments. In the second example, a series of points are given, using the Euclidean distance formula ` min d=\sum_{i=1}^{10}\sqrt{(x_0-x_i)^2+(y_0-y_i)^2} `Solve a point in a series of points, the distance from this point to all the other points is the smallest, direct operation is the solution to this problem.)