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I have a question bank(qb) .Form this qb i need to qenerate 4 sets of questions witout duplcates.In question bank questions again are arranged as 8 units and in 8 units i have 3 different formats i.e (simple questions,difficult questions,mediumquestions), before generating sets user will give input location of qb and level of quest(simple,diff,mediu).
How is that related to Swing? Do you have a question?
This was application already developed using swings.
But it was generating 4 sets of questions with some duplicates.
Now i need to generate 4 sets of quest with out duplicates
And do you have a question? What doesn't work? Complier errors? Runtime Exceptions? Stack trace?
That application was working perfectly but in some sets same questions are repeating.
so, i want to generate 4sets of questions with out any repetitions .
As you refuse to answer my questions, I can only give you a vague hint.
Implement a Set. You cannot have duplicates in a java.util.Set
sir, in my applic they already used java.util.List.
I am not clear with old application so i planned to write a new class for generating 4sets,
Ok, that's fine. Do it.
Somehow your code will have to
keep track of what questions have been selected so far.
You then have two possible approaches:
- Select the next question from those that have not been selected.
- Select a random question and reject it if it has already been selected.
Your choice will depend on how many questions there are altogether.
If there are under a thousand questions, any approach will do.
If there are many questions, approach a may be impractical.