Android Random String from txt file without repetition [duplicate]

This question already has an answer here:

• Creating random numbers with no duplicates 14 answers

I would like to add to my code possibility Random questions without repetition. By now I was able to do this: (from txt file Random value the question - answer) so it looks like my original code:

 public void value (){



        if(licznik>=number && licznik <= (2*number-1)){

            is = getResources().openRawResource(R.raw.poziom2pyt);
            is2 = getResources().openRawResource(R.raw.poziom2odp);




            else{
                is = getResources().openRawResource(R.raw.poziom1pyt);
                is2 = getResources().openRawResource(R.raw.poziom1odp);

            }


         Scanner questionScanner = new Scanner(is);
         Scanner answerScanner = new Scanner(is2); 


        ArrayList<String> answerList = new ArrayList<String>();
          ArrayList<String> questionList = new ArrayList<String>();

           try {
               while (answerScanner.hasNextLine() ) {
                   answerList.add(answerScanner.nextLine());  
                   questionList.add(questionScanner.nextLine()); 
               }
           } finally {
               answerScanner.close();  
               questionScanner.close();
           }  

           int nextInt = random.nextInt(questionList.size());



           String answerString = answerList.get(nextInt).replace("\uFEFF", "");
           String questionString = questionList.get(nextInt).replace("\uFEFF", "");
           yourAnswerString = answerString.substring(0);
           yourQuestionString = questionString.substring(2);
           shortform = questionString.substring(0,1);



       }

My question is this: How can I convert existing code to the Random answer questions- their value does not repeated example:

I have 10 questions: 1 2 3 4 5 6 7 8 9 10

The first time the function is called value gets in response:

1

then the next time it is called it should be only 9 possibilities (2,3,4,5,6,7,8,9,10)

During the second call to get such value

7

then there are questions about the issue: 2,3,4,5,6,8,9,10

(Question No. 1 is not returned to the pool until they restart the application)