The following graph is an example from Rosen (2011). It shows the flights and distances between some of the major airports in the United States.

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
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Exercise # 2 - Detecting Cycle between List of N Airports
The following graph is an example from Rosen (2011). It shows the flights and
distances between some of the major airports in the United States.
Dallas
200
1300
200
Austin
Washington
Denver
1400
Atlanta
160
800
800
Chicago
Houston
Write a function that takes a list of N airports and checks if they form a cycle of size N.
{A cycle is a directed path that starts and ends at the same vertex. Before writing code,
make sure you can identify cycles yourself}
>> check_cycles (G, ['Austin','Houston', 'Atlanta','Washington','Dallas'l)
Yes
>>> check_cycles (G, ['Austin', 'Houston','Atlanta','Washington'])
No
600
600
780
0000
000L
006
Transcribed Image Text:Exercise # 2 - Detecting Cycle between List of N Airports The following graph is an example from Rosen (2011). It shows the flights and distances between some of the major airports in the United States. Dallas 200 1300 200 Austin Washington Denver 1400 Atlanta 160 800 800 Chicago Houston Write a function that takes a list of N airports and checks if they form a cycle of size N. {A cycle is a directed path that starts and ends at the same vertex. Before writing code, make sure you can identify cycles yourself} >> check_cycles (G, ['Austin','Houston', 'Atlanta','Washington','Dallas'l) Yes >>> check_cycles (G, ['Austin', 'Houston','Atlanta','Washington']) No 600 600 780 0000 000L 006
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