Java将多个List合并为一个

泪的旋律

于 2024-04-11 19:25:19 发布

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文章标签： java 开发语言

本文链接：https://blog.youkuaiyun.com/qq_30262775/article/details/137649904

版权

@Service
public class QuestionServiceImpl implements QuestionService {
    @Autowired
    private QuestionMapper questionMapper;
    @Override
    public List<Question> getRandomQuestions() {
        List<Question> randomQuestions = new ArrayList<>();
        randomQuestions.addAll(questionMapper.selectRandomSingleChoiceQuestions());
        randomQuestions.addAll(questionMapper.selectRandomMultipleChoiceQuestions());
        randomQuestions.addAll(questionMapper.selectRandomJudgeQuestions());
        return randomQuestions;
    }
}