* Add doctests in all functions in basic_string.py
* Revert back to original basic_string.py
* Add doctest in basic_string.py
* [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci
* Update genetic_algorithm/basic_string.py
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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Christian Clauss <cclauss@me.com>
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