Answered: iven a partial main.py and PlaneQueue…

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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Given a partial main.py and PlaneQueue class in PlaneQueue.py, write the push() and pop() methods for PlaneQueue. Then complete main.py to read in whether flights are arriving or have landed at an airport.

An "arriving" flight is pushed onto the queue.
A "landed" flight is popped from the front of the queue.

Output the queue after each plane is pushed or popped. Entering -1 exits the program.

10.7 Air-traffic control (queue using a linked list)
Given a partial main.py and PlaneQueue class in PlaneQueue.py, write the push() and pop() methods for PlaneQueue. Then complete
main.py to read in whether flights are arriving or have landed at an airport.
An 'arriving" flight is pushed onto the queue.
A "landed" flight is popped from the front of the queue.
Output the queue after each plane is pushed or popped. Entering -1 exits the program.
Ex If the input is:
arriving AA213
arriving DAL23
arriving UA628
landed
-1
the output is:
Air-traffic control queue
Next to land: AA213
Air-traffic control queue
Next to land: AA213
Arriving flights:
DAL23
Air-traffic control queue
Next to land: AA213
Arriving flights:
DAL23
UA628
AA213 has landed.
Air-traffic control queue
Next to land: DAL23
Arriving flights:
UA628

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