Question: Consider the following operations on a Queue data structure that stores int values. ( enqueue puts item in a queue, whereas dequeue removes items )

Consider the following operations on a Queue data structure that stores int values. (enqueue puts item in a queue, whereas dequeue removes items)
Queue q= new Queue();
q.enqueue(3);
q.enqueue(5);
q.enqueue(9);
System.out.println(q.dequeue());
q.enqueue(2);
q.enqueue(4);
System out println(q.dequeue());
System out println(q.dequeue()); // d3
q.enqueue(1);
q.enqueue(8);
What value is returned by the last dequeue operation (denoted above with a d3 in comments)?
3
5
9
2
Consider the following operations on a Queue data structure that stores

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