In a Circular Queue of size 8, if you enqueue 6 elements and then dequeue 4 elements, how many empty slots are there in the queue?a)3b)1c)2d)0
Question
In a Circular Queue of size 8, if you enqueue 6 elements and then dequeue 4 elements, how many empty slots are there in the queue?a)3b)1c)2d)0
Solution
The answer is c) 2. Here's the step-by-step explanation:
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You start with a circular queue of size 8, which means there are 8 slots available.
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When you enqueue 6 elements, you fill up 6 of the 8 slots. This leaves 2 slots empty.
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Then, when you dequeue 4 elements, you remove 4 elements from the queue. However, because this is a circular queue, the slots from which these elements are removed become available again.
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So, after dequeuing 4 elements, you still have the same 2 empty slots that were left after the enqueue operation.
Therefore, there are 2 empty slots in the queue.
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