Algorithms Quiz | SP Contest 3 | Question 2

What is the minimum number of queues needed to implement a stack? We are not allowed to use any other data structure and also not allowed to use recursion. We may assume that given queue has basic functions like enqueue(), dequeue(), size(), isEmpty()
(A) 1
(B) 2
(C) 3
(D) 4

Answer: (A)
Explanation: https://www.geeksforgeeks.org/implement-a-stack-using-single-queue/amp/
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