Logic : Getting Random Numbers and Random Questions using Array List Class

getting Random Numbers :

=======================

public ArrayList getRandomList() {

Random rand = new Random();

ArrayList alist = new ArrayList();

while (alist.size() < 5) {

int v = rand.nextInt(5);

if (!alist.contains(v)) {

alist.add(v);

}

}

return alist;

}

Getting Random Questions from ArrayList :

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public ArrayList getQuestions(int level, ArrayList listObj){

ArrayList listObj2=new ArrayList();

Random r=new Random();

while(listObj2.size()<=20)

{

int r1=r.nextInt(listObj.size());

ModuleQuesBean mq=listObj.get(r1);

int lid=Integer.parseInt(mq.getLid());

if(lid==level)

{

if(!listObj2.contains(mq));

{

listObj2.add(mq);

}

}

}

for(int i=0;i<10;i++)

{

Log.w(" array list values ",listObj2.get(i).getQuestionid()+"");

}

return listObj2;

}