Complete the recursive function remove_last which creates a new list identical to the input list s but with the last element in the sequence that is equal to x removed. Hint: Remember that you can use negative indexing on lists! For example 1st [-1] refers to the last element in a list 1st, lst [-2] refers to the second to last element... def remove_last(x, s): """Create a new list that is identical to s but with the last element from the list that is equal to x removed. >>> remove_last(1, []) [] remove_last(1, [1]) >>> remove_last(1, [1,1]) [1] >>> remove_last(1, [2,1]) [2] >>> [] >>> remove_last(1, [3,1,2]) [3, 2] >>> remove_last(1, [3,1,2,1]) [3, 1, 2] >>> remove_last (5, [3, 5, 2, 5, 11]) [3, 5, 2, 11] HIGH "*** YOUR CODE HERE ***"

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
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Complete the recursive function remove_last which creates a new list identical to the input list s but
with the last element in the sequence that is equal to x removed.
Hint: Remember that you can use negative indexing on lists! For example 1st [-1] refers to the last
element in a list 1st, lst [-2] refers to the second to last element...
def remove_last(x, s):
"""Create a new list that is identical to s but with the last
element from the list that is equal to x removed.
>>> remove_last(1, [])
[]
>>> remove_last(1, [1])
[]
>>>
[1]
>>>
[2]
remove_last(1, [1,1])
remove_last(1, [2,1])
>>> remove_last(1, [3,1,2])
[3, 2]
>>> remove_last(1, [3,1,2,1])
[3, 1, 2]
>>> remove_last (5, [3, 5, 2, 5, 11])
[3, 5, 2, 11]
IIIII
"*** YOUR CODE HERE ***"
Illustrated here is a more complete doctest that shows good testing methodology. It is a little cumbersome
as documentation, but you'll want to think about it for your projects. Test every condition that might come
up. Then you won't be surprised when it does.
Transcribed Image Text:Complete the recursive function remove_last which creates a new list identical to the input list s but with the last element in the sequence that is equal to x removed. Hint: Remember that you can use negative indexing on lists! For example 1st [-1] refers to the last element in a list 1st, lst [-2] refers to the second to last element... def remove_last(x, s): """Create a new list that is identical to s but with the last element from the list that is equal to x removed. >>> remove_last(1, []) [] >>> remove_last(1, [1]) [] >>> [1] >>> [2] remove_last(1, [1,1]) remove_last(1, [2,1]) >>> remove_last(1, [3,1,2]) [3, 2] >>> remove_last(1, [3,1,2,1]) [3, 1, 2] >>> remove_last (5, [3, 5, 2, 5, 11]) [3, 5, 2, 11] IIIII "*** YOUR CODE HERE ***" Illustrated here is a more complete doctest that shows good testing methodology. It is a little cumbersome as documentation, but you'll want to think about it for your projects. Test every condition that might come up. Then you won't be surprised when it does.
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