Fixes on the code style based on the Code review and flake8.

[WadieBishoy25]

Hi TheAlgorithms Team,

I hope this message finds you well. My name is Wadie Botros, and I am currently working on an assignment for a course at Potsdam University, Germany. As part of the assignment, I reviewed and refactored the quick_sort.py file in your repository to improve its readability and maintainability.

Changes Made:

Extracted Partition Logic:

Moved the partitioning logic into a separate partition function to improve readability and maintainability. Improved Naming Conventions:

Renamed variables for better clarity (lesser to lesser_partition and greater to greater_partition). Separated User Input Logic:

Created a get_user_input function to handle user input separately from the sorting logic.

I believe these changes will make the code easier to maintain and understand for future contributors. If you have any questions or need further modifications, please feel free to discuss them with me. I am happy to make any adjustments as needed.

Thank you for considering my contribution. I look forward to your feedback.

Best regards,

Wadie Botros