נתונה הפעולה הבאה:

public static void what(Queue<Integer> q)
{
    int num1, num2;
    boolean found;
    Queue<Integer> temp1 = new Queue<Integer>();
    Queue<Integer> temp2 = new Queue<Integer>();
    while(!q.isEmpty())
    {
        num1 = q.remove();
        found = false;
        while(!q.isEmpty())
        {
            num2 = q.remove();
            if(num1 == num2)
                found = true;
            temp1.insert(num2);
        }
        while(!temp1.isEmpty())
            q.insert(temp1.remove());
        if(!found)
            temp2.insert(num1);
    }
    while(!temp2.isEmpty())
        q.insert(temp2.remove());
}