mirror of
https://github.com/TheAlgorithms/Python.git
synced 2024-12-18 09:10:16 +00:00
51 lines
1.3 KiB
Python
51 lines
1.3 KiB
Python
"""
|
|
This is a pure python implementation of the insertion sort algorithm
|
|
|
|
For doctests run following command:
|
|
python -m doctest -v insertion_sort.py
|
|
or
|
|
python3 -m doctest -v insertion_sort.py
|
|
|
|
For manual testing run:
|
|
python insertion_sort.py
|
|
"""
|
|
|
|
|
|
def insertion_sort(collection):
|
|
"""Pure implementation of the insertion sort algorithm in Python
|
|
|
|
:param collection: some mutable ordered collection with heterogeneous
|
|
comparable items inside
|
|
:return: the same collection ordered by ascending
|
|
|
|
Examples:
|
|
>>> insertion_sort([0, 5, 3, 2, 2])
|
|
[0, 2, 2, 3, 5]
|
|
|
|
>>> insertion_sort([])
|
|
[]
|
|
|
|
>>> insertion_sort([-2, -5, -45])
|
|
[-45, -5, -2]
|
|
"""
|
|
|
|
for loop_index in range(1, len(collection)):
|
|
insertion_index = loop_index
|
|
while (
|
|
insertion_index > 0
|
|
and collection[insertion_index - 1] > collection[insertion_index]
|
|
):
|
|
collection[insertion_index], collection[insertion_index - 1] = (
|
|
collection[insertion_index - 1],
|
|
collection[insertion_index],
|
|
)
|
|
insertion_index -= 1
|
|
|
|
return collection
|
|
|
|
|
|
if __name__ == "__main__":
|
|
user_input = input("Enter numbers separated by a comma:\n").strip()
|
|
unsorted = [int(item) for item in user_input.split(",")]
|
|
print(insertion_sort(unsorted))
|