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Fix sorts/bucket_sort.py implementation (#5786)

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* Fix sorts/bucket_sort.py

* updating DIRECTORY.md

* Remove unused var in bucket_sort.py

* Fix list index in bucket_sort.py

---------

Co-authored-by: Tianyi Zheng <tianyizheng02@gmail.com>
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
This commit is contained in:
Boris Galochkin 2023-08-18 04:38:19 +03:00 committed by GitHub
parent a207187ddb
commit 72c7b05caa
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2 changed files with 13 additions and 6 deletions
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1
DIRECTORY.md
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@ -710,6 +710,7 @@
* [2 Hidden Layers Neural Network](neural_network/2_hidden_layers_neural_network.py)
* Activation Functions
* [Exponential Linear Unit](neural_network/activation_functions/exponential_linear_unit.py)
* [Leaky Rectified Linear Unit](neural_network/activation_functions/leaky_rectified_linear_unit.py)
* [Back Propagation Neural Network](neural_network/back_propagation_neural_network.py)
* [Convolution Neural Network](neural_network/convolution_neural_network.py)
* [Perceptron](neural_network/perceptron.py)

18
sorts/bucket_sort.py
View File

@ -30,7 +30,7 @@ Source: https://en.wikipedia.org/wiki/Bucket_sort
from __future__ import annotations
def bucket_sort(my_list: list) -> list:
def bucket_sort(my_list: list, bucket_count: int = 10) -> list:
"""
>>> data = [-1, 2, -5, 0]
>>> bucket_sort(data) == sorted(data)
@ -43,21 +43,27 @@ def bucket_sort(my_list: list) -> list:
True
>>> bucket_sort([]) == sorted([])
True
>>> data = [-1e10, 1e10]
>>> bucket_sort(data) == sorted(data)
True
>>> import random
>>> collection = random.sample(range(-50, 50), 50)
>>> bucket_sort(collection) == sorted(collection)
True
"""
if len(my_list) == 0:
if len(my_list) == 0 or bucket_count <= 0:
return []
min_value, max_value = min(my_list), max(my_list)
bucket_count = int(max_value - min_value) + 1
bucket_size = (max_value - min_value) / bucket_count
buckets: list[list] = [[] for _ in range(bucket_count)]
for i in my_list:
buckets[int(i - min_value)].append(i)
for val in my_list:
index = min(int((val - min_value) / bucket_size), bucket_count - 1)
buckets[index].append(val)
return [v for bucket in buckets for v in sorted(bucket)]
return [val for bucket in buckets for val in sorted(bucket)]
if __name__ == "__main__":