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55 lines
1.4 KiB
Python
55 lines
1.4 KiB
Python
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"""
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Python implementation of bogobogosort, a "sorting algorithm
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designed not to succeed before the heat death of the universe
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on any sizable list" - https://en.wikipedia.org/wiki/Bogosort.
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Author: WilliamHYZhang
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"""
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import random
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def bogo_bogo_sort(collection):
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"""
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returns the collection sorted in ascending order
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:param collection: list of comparable items
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:return: the list sorted in ascending order
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Examples:
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>>> bogo_bogo_sort([0, 5, 3, 2, 2])
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[0, 2, 2, 3, 5]
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>>> bogo_bogo_sort([-2, -5, -45])
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[-45, -5, -2]
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>>> bogo_bogo_sort([420, 69])
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[69, 420]
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"""
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def is_sorted(collection):
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if len(collection) == 1:
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return True
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clone = collection.copy()
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while True:
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random.shuffle(clone)
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ordered = bogo_bogo_sort(clone[:-1])
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if clone[len(clone) - 1] >= max(ordered):
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break
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for i in range(len(ordered)):
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clone[i] = ordered[i]
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for i in range(len(collection)):
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if clone[i] != collection[i]:
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return False
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return True
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while not is_sorted(collection):
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random.shuffle(collection)
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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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unsorted = [int(item) for item in user_input.split(",")]
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print(bogo_bogo_sort(unsorted))
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