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Oct 3, 2019
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54 changes: 54 additions & 0 deletions sorts/bogo_bogo_sort.py
Original file line number Diff line number Diff line change
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"""
Python implementation of bogobogosort, a "sorting algorithm
designed not to succeed before the heat death of the universe
on any sizable list" - https://en.wikipedia.org/wiki/Bogosort.

Author: WilliamHYZhang
"""

import random


def bogo_bogo_sort(collection):
"""
returns the collection sorted in ascending order
:param collection: list of comparable items
:return: the list sorted in ascending order

Examples:
>>> bogo_bogo_sort([0, 5, 3, 2, 2])
[0, 2, 2, 3, 5]
>>> bogo_bogo_sort([-2, -5, -45])
[-45, -5, -2]
>>> bogo_bogo_sort([420, 69])
[69, 420]
"""

def is_sorted(collection):
if len(collection) == 1:
return True

clone = collection.copy()
while True:
random.shuffle(clone)
ordered = bogo_bogo_sort(clone[:-1])
if clone[len(clone) - 1] >= max(ordered):
break

for i in range(len(ordered)):
clone[i] = ordered[i]

for i in range(len(collection)):
if clone[i] != collection[i]:
return False
return True

while not is_sorted(collection):
random.shuffle(collection)
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(bogo_bogo_sort(unsorted))