from typing import Any def bubble_sort_iterative(collection: list[Any]) -> list[Any]: """Pure implementation of bubble sort algorithm in Python :param collection: some mutable ordered collection with heterogeneous comparable items inside :return: the same collection ordered by ascending Examples: >>> bubble_sort_iterative([0, 5, 2, 3, 2]) [0, 2, 2, 3, 5] >>> bubble_sort_iterative([]) [] >>> bubble_sort_iterative([-2, -45, -5]) [-45, -5, -2] >>> bubble_sort_iterative([-23, 0, 6, -4, 34]) [-23, -4, 0, 6, 34] >>> bubble_sort_iterative([0, 5, 2, 3, 2]) == sorted([0, 5, 2, 3, 2]) True >>> bubble_sort_iterative([]) == sorted([]) True >>> bubble_sort_iterative([-2, -45, -5]) == sorted([-2, -45, -5]) True >>> bubble_sort_iterative([-23, 0, 6, -4, 34]) == sorted([-23, 0, 6, -4, 34]) True >>> bubble_sort_iterative(['d', 'a', 'b', 'e']) == sorted(['d', 'a', 'b', 'e']) True >>> bubble_sort_iterative(['z', 'a', 'y', 'b', 'x', 'c']) ['a', 'b', 'c', 'x', 'y', 'z'] >>> bubble_sort_iterative([1.1, 3.3, 5.5, 7.7, 2.2, 4.4, 6.6]) [1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7] >>> bubble_sort_iterative([1, 3.3, 5, 7.7, 2, 4.4, 6]) [1, 2, 3.3, 4.4, 5, 6, 7.7] >>> import random >>> collection_arg = random.sample(range(-50, 50), 100) >>> bubble_sort_iterative(collection_arg) == sorted(collection_arg) True >>> import string >>> collection_arg = random.choices(string.ascii_letters + string.digits, k=100) >>> bubble_sort_iterative(collection_arg) == sorted(collection_arg) True """ length = len(collection) for i in reversed(range(length)): swapped = False for j in range(i): if collection[j] > collection[j + 1]: swapped = True collection[j], collection[j + 1] = collection[j + 1], collection[j] if not swapped: break # Stop iteration if the collection is sorted. return collection def bubble_sort_recursive(collection: list[Any]) -> list[Any]: """It is similar iterative bubble sort but recursive. :param collection: mutable ordered sequence of elements :return: the same list in ascending order Examples: >>> bubble_sort_recursive([0, 5, 2, 3, 2]) [0, 2, 2, 3, 5] >>> bubble_sort_iterative([]) [] >>> bubble_sort_recursive([-2, -45, -5]) [-45, -5, -2] >>> bubble_sort_recursive([-23, 0, 6, -4, 34]) [-23, -4, 0, 6, 34] >>> bubble_sort_recursive([0, 5, 2, 3, 2]) == sorted([0, 5, 2, 3, 2]) True >>> bubble_sort_recursive([]) == sorted([]) True >>> bubble_sort_recursive([-2, -45, -5]) == sorted([-2, -45, -5]) True >>> bubble_sort_recursive([-23, 0, 6, -4, 34]) == sorted([-23, 0, 6, -4, 34]) True >>> bubble_sort_recursive(['d', 'a', 'b', 'e']) == sorted(['d', 'a', 'b', 'e']) True >>> bubble_sort_recursive(['z', 'a', 'y', 'b', 'x', 'c']) ['a', 'b', 'c', 'x', 'y', 'z'] >>> bubble_sort_recursive([1.1, 3.3, 5.5, 7.7, 2.2, 4.4, 6.6]) [1.1, 2.2, 3.3, 4.4, 5.5, 6.6, 7.7] >>> bubble_sort_recursive([1, 3.3, 5, 7.7, 2, 4.4, 6]) [1, 2, 3.3, 4.4, 5, 6, 7.7] >>> import random >>> collection_arg = random.sample(range(-50, 50), 100) >>> bubble_sort_recursive(collection_arg) == sorted(collection_arg) True >>> import string >>> collection_arg = random.choices(string.ascii_letters + string.digits, k=100) >>> bubble_sort_recursive(collection_arg) == sorted(collection_arg) True """ length = len(collection) swapped = False for i in range(length - 1): if collection[i] > collection[i + 1]: collection[i], collection[i + 1] = collection[i + 1], collection[i] swapped = True return collection if not swapped else bubble_sort_recursive(collection) if __name__ == "__main__": import doctest from random import sample from timeit import timeit doctest.testmod() # Benchmark: Iterative seems slightly faster than recursive. num_runs = 10_000 unsorted = sample(range(-50, 50), 100) timer_iterative = timeit( "bubble_sort_iterative(unsorted[:])", globals=globals(), number=num_runs ) print("\nIterative bubble sort:") print(*bubble_sort_iterative(unsorted), sep=",") print(f"Processing time (iterative): {timer_iterative:.5f}s for {num_runs:,} runs") unsorted = sample(range(-50, 50), 100) timer_recursive = timeit( "bubble_sort_recursive(unsorted[:])", globals=globals(), number=num_runs ) print("\nRecursive bubble sort:") print(*bubble_sort_recursive(unsorted), sep=",") print(f"Processing time (recursive): {timer_recursive:.5f}s for {num_runs:,} runs")