排序并计算每个学生的名次

   private static void testSort() {
        Student 张三 = new Student("张三", 90, null);
        Student 李四 = new Student("李四", 90, null);
        Student 王五 = new Student("王五", 90, null);
        Student 赵六 = new Student("赵六", 80, null);
        Student 田七 = new Student("田七", 90, null);
        Student 王八 = new Student("王八", 78, null);

        List<Student> list = new ArrayList<>();
        list.add(张三);
        list.add(李四);
        list.add(王五);
        list.add(赵六);
        list.add(田七);
        list.add(王八);
        List<Student> listSort = list.stream().sorted(Comparator.comparing(Student::getScore).reversed())
                .collect(Collectors.toList());
        for (int i = 0; i < listSort.size(); i++) {
            if (i == 0) {
                listSort.get(i).setRanking(i + 1);
            } else {
                if (listSort.get(i).getScore() == listSort.get(i - 1).getScore()) {
                    listSort.get(i).setRanking(listSort.get(i - 1).getRanking());
                } else {
                    listSort.get(i).setRanking(i + 1);
                }
            }
        }
        listSort.forEach(System.out::println);
    }