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Insertion sort : type hint, docstring (#2327)

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* insertion sort : docstring, type hinting

* Update insertion_sort.py

Co-authored-by: Christian Clauss <cclauss@me.com>
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Guillaume Rochedix 2020-08-23 04:35:54 +02:00 committed by GitHub
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commit ee28deea4a
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1 changed files with 10 additions and 7 deletions
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17
sorts/insertion_sort.py
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@ -1,18 +1,21 @@
""" """
This is a pure Python implementation of the insertion sort algorithm A pure Python implementation of the insertion sort algorithm
This algorithm sorts a collection by comparing adjacent elements.
When it finds that order is not respected, it moves the element compared
backward until the order is correct. It then goes back directly to the
element's initial position resuming forward comparison.
For doctests run following command: For doctests run following command:
python -m doctest -v insertion_sort.py
or
python3 -m doctest -v insertion_sort.py python3 -m doctest -v insertion_sort.py
For manual testing run: For manual testing run:
python insertion_sort.py python3 insertion_sort.py
""" """
def insertion_sort(collection): def insertion_sort(collection: list) -> list:
"""Pure implementation of the insertion sort algorithm in Python """A pure Python implementation of the insertion sort algorithm
:param collection: some mutable ordered collection with heterogeneous :param collection: some mutable ordered collection with heterogeneous
comparable items inside comparable items inside
@ -47,4 +50,4 @@ def insertion_sort(collection):
if __name__ == "__main__": if __name__ == "__main__":
user_input = input("Enter numbers separated by a comma:\n").strip() user_input = input("Enter numbers separated by a comma:\n").strip()
unsorted = [int(item) for item in user_input.split(",")] unsorted = [int(item) for item in user_input.split(",")]
print(insertion_sort(unsorted)) print(f"{insertion_sort(unsorted) = }")