Enhancement/issue 8427

[elsayed2440]

Describe your change:

Implementation of the 2 algorithms from the ones mentioned in the issue #8427 , namely the sliding window algorithm and Kadane's algorithm.

• 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.
• [x]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 .
• [x]All functions have doctests that pass the automated testing.
• [x]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 commit message contains Fixes: #{$ISSUE_NO}.

[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

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[algorithms-keeper]

Variable and function names should follow the snake_case naming convention. Please update the following name accordingly: maxSubArraySum

Please provide return type hint for the function: maxSubArraySum. If the function does not return a value, please provide the type hint as: def function() -> None:

Please provide type hint for the parameter: arr

Please provide type hint for the parameter: size

[algorithms-keeper]

Please provide return type hint for the function: sliding_window. If the function does not return a value, please provide the type hint as: def function() -> None:

Please provide type hint for the parameter: elements

Please provide type hint for the parameter: window_size

[algorithms-keeper]

Please provide return type hint for the function: sliding_window. If the function does not return a value, please provide the type hint as: def function() -> None:

Please provide type hint for the parameter: elements

Please provide type hint for the parameter: window_size