Algorithms Quiz | SP Contest 3 | Question 4
What does the below function do in general?
(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
Explanation: The function takes a queue Q as an argument. It dequeues all items of Q and pushes them to a stack S. Then pops all items of S and enqueues the items back to Q. Since stack is LIFO order, all items of the queue are reversed.
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