We can implement a queue, Q, using two stacks S1 and S2. (a) Use pseudo code to describe the inQueue method (insert an item into Q). (b) Use pseudo code to describe the deQueue method (delete the first one from Q). (c) What is the worst case cost required for deQueue. (d) What is the amortized cost for deQueue.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
Question
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Please refer to this textbook: “Cormen et al., Introduction to Algorithms, 3rd Edition”

 

And answer the following questions:

Question:15

5. We can implement a queue, Q, using two stacks S1 and S2.
(a) Use pseudo code to describe the inQueue method (insert an item into
Q).
(b) Use pseudo code to describe the deQueue method (delete the first
one from Q).
(c) What is the worst case cost required for deQueue.
(d) What is the amortized cost for deQueue.
Transcribed Image Text:5. We can implement a queue, Q, using two stacks S1 and S2. (a) Use pseudo code to describe the inQueue method (insert an item into Q). (b) Use pseudo code to describe the deQueue method (delete the first one from Q). (c) What is the worst case cost required for deQueue. (d) What is the amortized cost for deQueue.
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