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6) [4] Given the following contents of a circular array implementation of a queue 0 2 3 4 5 20 30 40 first last Show the contents of the queue and locations of first and last after doing the following: Queue.dequeue ); Queue.dequeue (); Queue.enqueue (50); Queue.enqueue (60); Queue.enqueue (70); Queue.dequeue ); Queue.enqueue (80) 0 2 4

I am confusing about how to draw the queue with the given operation. I know that the queue is "first in first out". However, I am confused about how to draw it.

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Answer #1

dequeue(): Remove the element at First and move first towards right by 1 place

enqueue(): Put the element at last and move last by 1

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