Python/sorts/binary_insertion_sort.py

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"""
This is a pure Python implementation of the binary insertion sort algorithm
For doctests run following command:
python -m doctest -v binary_insertion_sort.py
or
python3 -m doctest -v binary_insertion_sort.py
For manual testing run:
python binary_insertion_sort.py
"""
def binary_insertion_sort(collection: list) -> list:
"""Pure implementation of the binary insertion sort algorithm in Python
:param collection: some mutable ordered collection with heterogeneous
comparable items inside
:return: the same collection ordered by ascending
Examples:
>>> binary_insertion_sort([0, 4, 1234, 4, 1])
[0, 1, 4, 4, 1234]
>>> binary_insertion_sort([]) == sorted([])
True
>>> binary_insertion_sort([-1, -2, -3]) == sorted([-1, -2, -3])
True
>>> lst = ['d', 'a', 'b', 'e', 'c']
>>> binary_insertion_sort(lst) == sorted(lst)
True
>>> import random
>>> collection = random.sample(range(-50, 50), 100)
>>> binary_insertion_sort(collection) == sorted(collection)
True
>>> import string
>>> collection = random.choices(string.ascii_letters + string.digits, k=100)
>>> binary_insertion_sort(collection) == sorted(collection)
True
"""
n = len(collection)
for i in range(1, n):
val = collection[i]
low = 0
high = i - 1
while low <= high:
mid = (low + high) // 2
if val < collection[mid]:
high = mid - 1
else:
low = mid + 1
for j in range(i, low, -1):
collection[j] = collection[j - 1]
collection[low] = val
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(binary_insertion_sort(unsorted))