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fixes join.py and split.py action and requirements error #12438

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@sanks011 sanks011 commented Dec 16, 2024

Describe your change:

Fixes #12408
Fixes #12403
Fixes #12346

  • Add an algorithm?
  • Fix a bug or typo in an existing algorithm?
  • Add or change doctests? -- Note: Please avoid changing both code and tests in a single pull request.
  • 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.
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  • All functions and variable names follow Python naming conventions.
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  • All functions have doctests that pass the automated testing.
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  • 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".

For #12408
Previously it was
image
image

Now
image
image

new version utilizes Python's built-in separator.join(separated) to join the strings. This method is more efficient and handles edge cases (like empty strings) properly without needing manual intervention and all() function to check if all elements in the separated list are strings before proceeding. This avoids checking each element individually during the loop.

For #12403
Previously it was
image
Now
image

The updated code includes a check at the end (if string and string[-1] == separator) to ensure that if the string ends with a separator, an empty string '' is added to the list. This ensures the behavior matches Python's built-in split method.

For #12346
image

@algorithms-keeper algorithms-keeper bot added the tests are failing Do not merge until tests pass label Dec 16, 2024
@algorithms-keeper algorithms-keeper bot added the awaiting reviews This PR is ready to be reviewed label Dec 16, 2024
@sanks011 sanks011 changed the title fixes join.py action fixes join.py and split.py action Dec 16, 2024
@sanks011 sanks011 changed the title fixes join.py and split.py action fixes join.py and split.py action and requirements error Dec 16, 2024
strings/join.py Outdated
if not all(isinstance(word_or_phrase, str) for word_or_phrase in separated):
raise Exception("join() accepts only strings")

joined = separator.join(separated)
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@Kaaserne Kaaserne Dec 16, 2024

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Question about this join though. Isn't the point of this repository to show possible implementations of python functions? Because if that's the case, I was wondering why the join function now internally uses str.join?

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okay I understood! Now I'll try to implement something which manually constructs the resulting string without relying on Python's built-in str.join()

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@imSanko imSanko left a comment

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seems fine but why the join function now internally uses str.join? as what @Kaaserne said

@algorithms-keeper algorithms-keeper bot removed tests are failing Do not merge until tests pass labels Dec 18, 2024
for i, element in enumerate(separated):
result += element
if i < len(separated) - 1: # Add separator only between elements
result += separator

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@Kaaserne can you please review it?

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