* add doctest ut
* test complete
* [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci
* format
* ruff update
* cover line 154
* Update data_structures/linked_list/is_palindrome.py
Co-authored-by: Christian Clauss <cclauss@me.com>
* use dataclass
* pre-commit fix
* Fix mypy errors
* use future annotations
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Co-authored-by: Harsha Kottapalli <skottapalli@microsoft.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Christian Clauss <cclauss@me.com>