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* Code enhancements in binary_insertion_sort.py * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * Apply suggestions from code review --------- Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> Co-authored-by: Christian Clauss <cclauss@me.com>
67 lines
2.0 KiB
Python
67 lines
2.0 KiB
Python
"""
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This is a pure Python implementation of the binary insertion sort algorithm
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For doctests run following command:
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python -m doctest -v binary_insertion_sort.py
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or
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python3 -m doctest -v binary_insertion_sort.py
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For manual testing run:
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python binary_insertion_sort.py
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"""
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def binary_insertion_sort(collection: list) -> list:
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"""
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Sorts a list using the binary insertion sort algorithm.
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:param collection: A mutable ordered collection with comparable items.
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:return: The same collection ordered in ascending order.
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Examples:
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>>> binary_insertion_sort([0, 4, 1234, 4, 1])
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[0, 1, 4, 4, 1234]
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>>> binary_insertion_sort([]) == sorted([])
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True
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>>> binary_insertion_sort([-1, -2, -3]) == sorted([-1, -2, -3])
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True
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>>> lst = ['d', 'a', 'b', 'e', 'c']
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>>> binary_insertion_sort(lst) == sorted(lst)
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True
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>>> import random
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>>> collection = random.sample(range(-50, 50), 100)
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>>> binary_insertion_sort(collection) == sorted(collection)
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True
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>>> import string
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>>> collection = random.choices(string.ascii_letters + string.digits, k=100)
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>>> binary_insertion_sort(collection) == sorted(collection)
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True
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"""
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n = len(collection)
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for i in range(1, n):
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value_to_insert = collection[i]
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low = 0
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high = i - 1
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while low <= high:
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mid = (low + high) // 2
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if value_to_insert < collection[mid]:
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high = mid - 1
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else:
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low = mid + 1
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for j in range(i, low, -1):
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collection[j] = collection[j - 1]
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collection[low] = value_to_insert
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return collection
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if __name__ == "__main":
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user_input = input("Enter numbers separated by a comma:\n").strip()
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try:
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unsorted = [int(item) for item in user_input.split(",")]
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except ValueError:
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print("Invalid input. Please enter valid integers separated by commas.")
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raise
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print(f"{binary_insertion_sort(unsorted) = }")
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