* improved prime numbers implementation
* fixup! Format Python code with psf/black push
* fix type hint
* fixup! Format Python code with psf/black push
* fix doctests
* updating DIRECTORY.md
* added prime tests with negative numbers
* using for instead filter
* updating DIRECTORY.md
* Remove unused typing.List
* Remove tab indentation
* print("Sorted order is:", " ".join(a))
* add the index calculation at difital_image_processing file
* make changes at index_calculation
* update the variables to self variables at functions
* update the word wrap in comments at index_calculation
* add the hamming code algorithm
* Wrap long lines
