List the contents of both queues with the front of the queue leftmost.
Given two initially empty queues, queue1 and queue2 and the following commands.
queue1.enqueue(4)
queue1.enqueue(3)
queue2.enqueue(7)
queue1.enqueue(6)
queue1.dequeue()
queue1.enqueue(queue2.peekFront())
queue2.enqueue(queue1.peekFront())
queue1.dequeue()
queue2.enqueue(7)
Answer: Q1 = 6, 7 Q2 = 7, 3, 7
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