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Michael HauseggerTheRealHauiChristian Clausspre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>pre-commit-ci[bot] <pre-commit-ci[bot]@users.noreply.github.com>* Added some Unit Tests to increase test code coverage * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * updating DIRECTORY.md --------- Co-authored-by: TheRealHaui <michael.hausegger@hausegger.tech> Co-authored-by: Christian Clauss <cclauss@me.com> Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> Co-authored-by: pre-commit-ci[bot] <pre-commit-ci[bot]@users.noreply.github.com>
34 lines
986 B
Python
34 lines
986 B
Python
#!/usr/bin/python
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"""
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The Fisher-Yates shuffle is an algorithm for generating a random permutation of a
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finite sequence.
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For more details visit
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wikipedia/Fischer-Yates-Shuffle.
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"""
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import random
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from typing import Any
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def fisher_yates_shuffle(data: list) -> list[Any]:
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"""
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>>> import random
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>>> from unittest.mock import patch
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>>> with patch('random.randint', side_effect=[0, 3, 1, 2, 2, 0, 3, 1]):
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... fisher_yates_shuffle(["python", "says", "hello", "!"])
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['says', 'python', '!', 'hello']
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"""
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for _ in range(len(data)):
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a = random.randint(0, len(data) - 1)
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b = random.randint(0, len(data) - 1)
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data[a], data[b] = data[b], data[a]
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return data
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if __name__ == "__main__":
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integers = [0, 1, 2, 3, 4, 5, 6, 7]
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strings = ["python", "says", "hello", "!"]
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print("Fisher-Yates Shuffle:")
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print("List", integers, strings)
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print("FY Shuffle", fisher_yates_shuffle(integers), fisher_yates_shuffle(strings))
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