Write a function get key that takes as input a dictionary with integers as values, and a function. Evaluate the function on the list of values from the dictionary to obtain a value v. Return the key of the dictionary that maps to v. If there's more than one key, break ties at random. If there's no such value in the dictionary, return None.

C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter17: Linked Lists
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Write a function get key that takes as input a dictionary with integers as values, and a function.
Evaluate the function on the list of values from the dictionary to obtain a value v. Return the key of the
dictionary that maps to v. If there's more than one key, break ties at random. If there's no such value
in the dictionary, return None.
Examples,
>>> animals = {'tiger' : 5, 'bat' : 3, 'cow' : 3, 'bear' : 4}
|>> get_key(an imals, max)
'tiger'
>>> random.seed(5)
>> get_key(an imals, min)
'cow'
>» print(get_key(animals, avg))
None
where the function avg is defined as follows:
def avg(x):
return sum(x) / len(x)
Transcribed Image Text:Write a function get key that takes as input a dictionary with integers as values, and a function. Evaluate the function on the list of values from the dictionary to obtain a value v. Return the key of the dictionary that maps to v. If there's more than one key, break ties at random. If there's no such value in the dictionary, return None. Examples, >>> animals = {'tiger' : 5, 'bat' : 3, 'cow' : 3, 'bear' : 4} |>> get_key(an imals, max) 'tiger' >>> random.seed(5) >> get_key(an imals, min) 'cow' >» print(get_key(animals, avg)) None where the function avg is defined as follows: def avg(x): return sum(x) / len(x)
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