None 8:48 40 AExplain the solution indetail please because Ido not understand thiscodeFor an initially empty queueQ, what are the sequence ofoperations the resulted in[1,2] contents.Select all correct questionsQ.enqueue(1), Q.first(),Q.dequeue(), Q.enqueue(1),Q.enqueue(2), Q.is_empty()Q.dequeue(), Q.first(),Q.dequeue(), Q.enqueue(2),Q.enqueue(2), Q.is_empty()Q.enqueue(2), Q.first(),Q.dequeue(), Q.enqueue(2),Q.dequeue(), Q.enqueue(1),Q.is_empty()Qenqueue(2), Q.first(),Q.dequeue(), Q.enqueue(1),Q.enqueue(2), Q.is_empty()

Queue is data structure which follows First In first out strategy. The operations allowed are…

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For an initially empty queue Q, what are the sequence of operations the resulted in [1,2] contents.

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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Concept explainers

Storage Devices

Storage devices can store digital information/data and applications (in the form of audio, video, image, etc.) to process the result of any computational work. They are a kind of computer hardware that stores information and instruction to be processed. A storage unit is a part of a computer system. Every computer has a storage device. The storage devices work as a memory. They are also known as a storage medium, digital storage, or storage media, which temporarily or permanently store information. They are used either internally or externally in the computer system, server, or any computation device to hold the information. Examples include a pen drive, CD, DVD, floppy disk, memory card and so forth.

Question

None

8:48 40 A
Explain the solution in
detail please because I
do not understand this
code
For an initially empty queue
Q, what are the sequence of
operations the resulted in
[1,2] contents.
Select all correct questions
Q.enqueue(1), Q.first(),
Q.dequeue(), Q.enqueue(1),
Q.enqueue(2), Q.is_empty()
Q.dequeue(), Q.first(),
Q.dequeue(), Q.enqueue(2),
Q.enqueue(2), Q.is_empty()
Q.enqueue(2), Q.first(),
Q.dequeue(), Q.enqueue(2),
Q.dequeue(), Q.enqueue(1),
Q.is_empty()
Qenqueue(2), Q.first(),
Q.dequeue(), Q.enqueue(1),
Q.enqueue(2), Q.is_empty()

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