Assignment 20 – function implementation

Due Monday, October 29 — class will be devoted to this effort

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Module magnificent.py (file will be available at the start of class)

• Your module should implement the below seven functions. These functions are all related to previous tasks this semester.

• None of your functions should get input or print output.

• Examine and think about algorithms for the problems. However, do not write any code before class.

• There should be only one submission per group

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Testing

• A simple tester seven.py is available

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Function beans( a, b, v )

• Adapted from Homework 9.

• Returns an integer estimate of number of beans in a jar of volume v, where the beans are on average a in length and b in height using the value of formula v F / j, where F is the percentage of usable volume in the jar and j is the size of a jelly bean. Do not round up your estimate.

• On average, only 69.8% of the volume of jelly bean jar is usable.

• The volume of a jelly bean is approximately 5 π a b2 / 24, where a and b are respectively the length and height of the bean.

• Partial output from a sample run of seven.py

433 beans with length 1.52 and height 0.9 fits in a jar with volume 500

13 beans with length 2 and height 1 fits in a jar with volume 25

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Function manhattan_distance( a1, s1, a2, s2 )

• Adapted from Homework 8

• Returns the approximate distance in miles between a person at the corner avenue a1 and street s1 in Manhattan and a person at the corner of avenue a2 and street s2 in Manhattan.

• NYC distance rules:

• Distance of a Manhattan city block running from one street to the next is on average 1/20^th of a mile.

• Distance of a Manhattan city block running from one avenue to the next is on average 3/20^th of a mile.

• Partial output from a sample run of seven.py

Corners ( 6 , 59 ) and ( 7 , 34 ) are 1.4 miles apart

Corners ( 2 , 47 ) and ( 6 , 238 ) are 10.15 miles apart

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Function relate( x, y )

• Adapted from Homework 16.

• Returns 'comes before', 'is equal to', or 'comes after', depending whether the relationships between strings x and y are respectively:

• x alphabetically comes before y,

• x is equal to y, or

• x alphabetically comes after y.

• Partial output from a sample run of seven.py

kiwi is equal to kiwi

apple comes before banana

orange comes after melon

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Function youngest( y )

• Adapted from Homework 6

• Returns the youngest acceptable age for a y-year old to date according to the dating folk rule you should only date someone who is at least seven years older than than half your age.

• Partial output from a sample run of seven.py

19 year old can date a 16 year old

22 year old can date a 18 year old

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Function is_dateable( y1, y2 )

• Adapted from Homework 6

• Returns True or False whether a y2-year old is an acceptably-aged date for a y1-year old.

• Your implementation should make use of function youngest().

• Partial output from a sample run of seven.py

15 year-old can date a 22 year-old is True

22 year-old can date a 15 year-old is False

19 year-old can date a 18 year-old is True

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Function mutually_dateable( y1, y2 )

• Adapted from Homework 6

• Returns True or False whether both a y2-year old is an acceptably-aged date for a y1-year old, and a y1-year old is an accepta bly-aged date for a y2-year old

• Your implementation should make use of function is_dateable().

• Partial output from a sample run of seven.py

25 year-old can date a 65 year-old and vice-versa is False

20 year-old can date a 18 year-old and vice-versa is True

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Function check_out( dataset, v ).

• Adapted from Homework 14

• Parameter dataset is a list of rows, where each row is a list of cells (i.e., values). All cell values have the same type.

• Parameter v is a value is of the same type as the cells in dataset.

• Returns a list of counts; where the r^th count is number of occurrences of v in the r^th row of dataset.

• Partial output from a sample run of seven.py

www.cs1112.org/datasets/csv/co1.csv distribution of 6 is [1, 0, 2, 0]

www.cs1112.org/datasets/csv/co2.csv distribution of 4 is [1, 0, 1, 2, 1, 0]

 

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© 2019 Jim Cohoon

Resources from previous semesters are available.