完成下面的代码，实现对应功能，完成排序算法

Question

public class User{
int age和double score
补充代码，使得两个类都能编译通过
}
public class Test{

    public static void main(String[] args){
    List<User>userList = new Arraylist<User>();
    User u1 = new User(11,66.5);
    User u2 = new User(70,20.5);
    User u3 = new User(35,80.5);
    User u4 = new User(35,67.5);

    userList.add(u1);
    userList.add(u2);
    userList.add(u3);
    userList.add(u4);

    sort(userList);

}
public static void sort(List<User>userList){
    //完成排序算法，根据年龄从大到小排序，如果age相同则根据成绩从大到小排序

}

}

Answer 1

 Collections.sort(userList, new Comparator<User>() {
        @Override
        public int compare(User u1, User u2) {
                if (u1.age > u2.age) {
                        return -1;
                } else if (u1.age < u2.age) {
                        return 1;
                } else if (u1.score > u2.score) {
                        return -1;
                } else if (u1.score < u2.score) {
                        return 1;
                }
                return 0;
        }
});