Op1:

enqueue (Q₂, x);

while (! IsEmpty (Q₁))

enqueue (Q₂, dequeue(Q₁));

swap the name of Q₁ and Q₂;

Op2: return (dequeue (Q₁));

where Q₁ and Q₂ are two queues and x is the element inserted into the queue.

What does the two operations Op1 and Op2 do.