Skip to content
Merged
Changes from 1 commit
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
54 changes: 54 additions & 0 deletions sorts/bogo_bogo_sort.py
Original file line number Diff line number Diff line change
@@ -0,0 +1,54 @@
"""
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])
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

At least one test should have at least one:

  • negative integer
  • negative float
  • zero
  • positive integer
  • positive float

What happens when we bogo_bogo_sort(list("Hello!")) ?

Copy link
Contributor Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Test #2 has negative integer, does that satisfy the requirement?
For bogo_bogo_sort(list("Hello!")) error would be caught has line 53 converts input to integer and would raise ValueError, would you like me to add a try/catch in the algorithm function as well?

Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Mixing pos int, pos float, zero, neg int, neg float in a single test was what I was looking for.

Traceback (most recent call last):
Tests for a ValueError.

[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))