Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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![# A set of constants, each representing a list index for station information.
ID = 0
NAME = 1
LATITUDE
%3D
LONGITUDE
3
САРАСITY
4
BIKES_AVAILABLE
%3D
DOCKS_AVAILABLE
%3D
NO_KIOSK
"SMART'
# For use in the get_lat_lon_distance helper function
EARTH_RADIUS
= 6371
# SAMPLE DATA TO USE IN DOCSTRING EXAMPLES
SAMPLE_STATIONS
[7090, 'Danforth Ave / Lamb Ave',
43.681991, -79.329455, 15, 4, 10],
[7486, 'Gerrard St E / Ted Reeve Dr',
43.684261, -79.299332, 24, 5, 19],
[7571, 'Highfield Rd / Gerrard St E - SMART',
43.671685, -79.325176, 19, 14, 5]]
HANDOUT_STATIONS
[7000, 'Ft. York / Capreol Crt.',
43.639832, -79.395954, 31, 20, 11],
[7001, 'Lower Jarvis St SMART / The Esplanade',
43.647992, -79.370907, 15, 5, 10]]](https://content.bartleby.com/qna-images/question/65681b52-ebcf-46be-a66e-16072ee652a6/67ba557b-ed0d-44f4-8a56-c7b183e2cca8/vujv86q_processed.png)
Transcribed Image Text:# A set of constants, each representing a list index for station information.
ID = 0
NAME = 1
LATITUDE
%3D
LONGITUDE
3
САРАСITY
4
BIKES_AVAILABLE
%3D
DOCKS_AVAILABLE
%3D
NO_KIOSK
"SMART'
# For use in the get_lat_lon_distance helper function
EARTH_RADIUS
= 6371
# SAMPLE DATA TO USE IN DOCSTRING EXAMPLES
SAMPLE_STATIONS
[7090, 'Danforth Ave / Lamb Ave',
43.681991, -79.329455, 15, 4, 10],
[7486, 'Gerrard St E / Ted Reeve Dr',
43.684261, -79.299332, 24, 5, 19],
[7571, 'Highfield Rd / Gerrard St E - SMART',
43.671685, -79.325176, 19, 14, 5]]
HANDOUT_STATIONS
[7000, 'Ft. York / Capreol Crt.',
43.639832, -79.395954, 31, 20, 11],
[7001, 'Lower Jarvis St SMART / The Esplanade',
43.647992, -79.370907, 15, 5, 10]]
![def upgrade_stations(threshold: int, num_bikes: int,
stations: List["Station"]) -> int:
'""Modify each station in stations that has a capacity that is less than
threshold by adding num_bikes to the capacity and bikes available counts.
Modify each station at most once.
Return the total number of bikes that were added to the bike share network.
Precondition: num_bikes >= 0
>> handout_copy =
>> upgrade_stations(25, 5, handout_copy)
[HANDOUT_STATIONS[Ø][:], HANDOUT_STATIONS[1][:]]
>>> handout_copy[0]
HANDOUT_STATIONS[0]
==
True
>>> handout_copy[1]
[7001, 'Lower Jarvis St SMART / The Esplanade', \
43.647992, -79.370907, 20, 10, 10]
True](https://content.bartleby.com/qna-images/question/65681b52-ebcf-46be-a66e-16072ee652a6/67ba557b-ed0d-44f4-8a56-c7b183e2cca8/soaee8b_processed.png)
Transcribed Image Text:def upgrade_stations(threshold: int, num_bikes: int,
stations: List["Station"]) -> int:
'""Modify each station in stations that has a capacity that is less than
threshold by adding num_bikes to the capacity and bikes available counts.
Modify each station at most once.
Return the total number of bikes that were added to the bike share network.
Precondition: num_bikes >= 0
>> handout_copy =
>> upgrade_stations(25, 5, handout_copy)
[HANDOUT_STATIONS[Ø][:], HANDOUT_STATIONS[1][:]]
>>> handout_copy[0]
HANDOUT_STATIONS[0]
==
True
>>> handout_copy[1]
[7001, 'Lower Jarvis St SMART / The Esplanade', \
43.647992, -79.370907, 20, 10, 10]
True
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