Answered: S and Q are integer stacks and priority…

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

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Question

S and Q are integer stacks and priority queues, respectively. C mod 3 is the priority of an element C joining the priority queue Q. In other words, the elements' priority numbers are either 0 or 1 or 2. What is the output of the following code if A, B, and C are integer variables? However, the queue procedures have been modified to work on a priority queue.

1.A = 10
2.B = 11
3.C = A+B
4.while (C < 110) do
5. if (C mod 3) = 0 then PUSH (S,C)
6. else ENQUEUE (Q,C)
7. A = B
8. B = C
9. C = A + B
10.end
11.while not EMPTY_STACK (S) do
12. POP (S,C)
13. PRINT (C)
14.end
15.while not EMPTY_QUEUE (Q) do
16. DEQUEUE (Q, C)
17. PRINT (C)
18.end

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