Algorithms Quiz | SP Contest 3 | Question 4

What does the below function do in general?

void fun(Queue *Q)
{
	Stack S; // Say it creates an empty stack S

	// Run while Q is not empty
	while (!isEmpty(Q))
	{
		// deQueue an item from Q and
		// push the dequeued item to S
		push(&S, deQueue(Q));
	}

	// Run while Stack S is not empty
	while (!isEmpty(&S))
	{
	// Pop an item from S and enqueue
	// the popped item to Q
	enQueue(Q, pop(&S));
	}
}

(A)

Removes the last element from the queue, Q

(B)

Keeps the queue, Q same as it was before the call

(C)

Makes queue Q empty

(D)

Reverses the queue Q

Answer

Please comment below if you find anything wrong in the above post
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