add gas station

[AdePhil]

Describe your change:

Added a new algorithm to solve the gas station problem. I added the file gas_station.py to the greedy_methods directory. I have also added docstrings for the function with an explanation and doctests.

• Add an algorithm?
• Fix a bug or typo in an existing algorithm?
• Documentation change?

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 algorithms.
• 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 include at least one URL that points to Wikipedia or another similar explanation.
• If this pull request resolves one or more open issues then the description above includes the issue number(s) with a closing keyword: "Fixes #ISSUE-NUMBER".

[AdePhil]

Hi @cclauss, Can you take a look at this. Thanks.

[algorithms-keeper]

Click here to look at the relevant links ⬇️

🔗 Relevant Links

Repository:

• Contributing guidelines
• Project Euler solution guidelines

Python:

• Formatted string literals (f-strings)
• Type hints
• doctest
• unittest
• pytest

Automated review generated by algorithms-keeper. If there's any problem regarding this review, please open an issue about it.

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[algorithms-keeper]

Click here to look at the relevant links ⬇️

🔗 Relevant Links

Repository:

• Contributing guidelines
• Project Euler solution guidelines

Python:

• Formatted string literals (f-strings)
• Type hints
• doctest
• unittest
• pytest

Automated review generated by algorithms-keeper. If there's any problem regarding this review, please open an issue about it.

---

algorithms-keeper commands and options

algorithms-keeper actions can be triggered by commenting on this PR:

• @algorithms-keeper review to trigger the checks for only added pull request files
• @algorithms-keeper review-all to trigger the checks for all the pull request files, including the modified files. As we cannot post review comments on lines not part of the diff, this command will post all the messages in one comment.

NOTE: Commands are in beta and so this feature is restricted only to a member or owner of the organization.

[cclauss]

Please let me try something...

[cclauss]

Any questions about these changes? 0207354

Tuples are smaller in memory than lists and they cannot be modified at runtime which can be an advantage for data safety. For the doctests, we do not need to test every element but the length and the first and the last is a good idea.

[cclauss]

Nice one! Thanks for your patience.

[AdePhil]

Any questions about these changes? 0207354

Tuples are smaller in memory than lists and they cannot be modified at runtime which can be an advantage for data safety. For the doctests, we do not need to test every element but the length and the first and the last is a good idea.

Yeah. This makes sense. Thanks.