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sorts: make quick_sort work with any Comparable, not just int - #15327

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Pradhyut21 wants to merge 2 commits into
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Pradhyut21:fix/quick-sort-comparable-typehint
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sorts: make quick_sort work with any Comparable, not just int#15327
Pradhyut21 wants to merge 2 commits into
TheAlgorithms:masterfrom
Pradhyut21:fix/quick-sort-comparable-typehint

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@Pradhyut21

@Pradhyut21 Pradhyut21 commented Sep 14, 2026

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Describe your change:

Updates sorts/quick_sort.py to use a Comparable Protocol + TypeVar bound. Simplifies partitioning into cleaner lesser/equal/greater lists. Adds str and float doctest examples.

Part of #15234

Checklist:

  • I have read CONTRIBUTING.md.
  • This pull request is all my own work -- I have not plagiarized.
  • I know that pull requests will not be merged if they fail the automated tests.
  • This PR only changes one algorithm file. To ease review, please open separate PRs for separate improvements.
  • All new Python files are placed inside an existing directory.
  • All filenames are in all lowercase characters with no spaces or dashes.
  • All functions and variable names follow Python naming conventions.
  • All function parameters and return values are annotated with Python type hints.
  • All functions have doctests that pass the automated testing.
  • All new algorithms have a URL in its comments that points to Wikipedia or other similar explanation.
  • If this pull request resolves one or more open issues then the description above includes the issue number(s) with a brief explanation.

@Pradhyut21
sorts: make quick_sort work with any Comparable, not just int
82cb9c7 
Use a Comparable Protocol + TypeVar bound so that quick_sort
correctly expresses it can sort any orderable type, not just
integers. Simplifies partitioning to cleaner lesser/equal/greater
lists and adds string + float doctest examples.

Part of TheAlgorithms#15234
@Pradhyut21
fix: use PEP 695 type params, remove TypeVar import
7000653
@algorithms-keeper algorithms-keeper Bot added awaiting reviews This PR is ready to be reviewed enhancement This PR modified some existing files labels Sep 14, 2026
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