Question

可能重复：
Need help in structuring things in XML file

有如下结构：

Question0 : What is ur name?
Answer0: Tina
  Question0.0 : What are your hobbies?
   Answer0.0.0 : reading 
       Question0.0.0.0 :What do you like in reading.?
              Answer0.. : .....
   Answer0.0.1 : Dancing
       Question0.0.0.1 :which dance do you like?
...........
Answer1:Roger 
...........same question answer as above.

搜索：我想为上面的结构制作一个数据结构，它应该能够给出答案的父（问题）以及问题的父（答案）。不要想到解决方案。？

删除和添加：无需关心。

一个问题可以有多个答案。不，每个问题都必须至少有一个答案。是的，每个问题都有一个问题的答案。

另外，我如何非常有效地进行这种结构编号？

Answer 1

我会跟进问题：

class Question {
    static final String DEFAULT = "DefaultFollowup";
    String questionText;
    Map<String,Question> responsesAndFollowups;
    Question(String text) {
       this.questionText = text;
       responsesAndFollowups = new HashMap<String,Question>();
    }
    void addFollowup(String response, Question followup) {
        responsesAndFollowups.put(response,followup);
    }
    void setDefaultFollowup(Question followup) {
        addFollowup(DEFAULT,followup);
    }
    Question getFollowup(String response) {
        Question followup = responsesAndFollowups.get(response);
        if(followup == null) followup = responsesAndFollowups.get(DEFAULT);
        return followup;
    }
}

稍后，你可以这样做

Question name = new Question("What is your name?");
Question hobbies = new Question("What is your favorite hobby?");
Question dancing = new Question("What is your favorite dance?");
Question reading = new Question("What is your favorite book?");

name.setDefaultFollowup(hobbies);
hobbies.setDefaultFollowup(reading); // ask people about reading by default
hobbies.addFollowup("Dancing",dancing); // if they say they like dancing, ask that instead

Answer 2

虽然理论上它是Swing框架的一部分，但JTree类几乎满足了你的所有要求。

Answer 3

这只是一棵简单的树，所以最基本的实现是：

public class Question {
   private String question;
   private List<Answer> answers;
   //getters setters adding/removing etc
}

public class Answer {
   private List<Question> questions;
   private String answer;
   //getters setters adding/removing etc
}

然后在你的代码中你只需要使用：

List<Question> questionsAsked = new ArrayList<Question>();

我如何将以下内容存储在一些有效的数据结构中

3 个答案: