[mypy] Annotates other/scoring_algorithm

[spazm]

Describe your change:

Adds type annotations to other/scoring_algorithm

Adds slight improvements to code.

Before

% git checkout master 
Switched to branch 'master'
Your branch is up to date with 'origin/master'.

% mypy  scoring_algorithm.py
scoring_algorithm.py:39: error: Need type annotation for "data_lists" (hint: "data_lists: List[<type>] = ...")
Found 1 error in 1 file (checked 1 source file)

% mypy  --strict scoring_algorithm.py
scoring_algorithm.py:29: error: Missing type parameters for generic type "list"
scoring_algorithm.py:39: error: Need type annotation for "data_lists" (hint: "data_lists: List[<type>] = ...")
Found 2 errors in 1 file (checked 1 source file)

After

% git checkout -
Switched to branch 'mypy-fix-other-scoring_algorithm'
Your branch is up to date with 'origin/mypy-fix-other-scoring_algorithm'.

% mypy  --strict scoring_algorithm.py  
Success: no issues found in 1 source file

% python -m doctest scoring_algorithm.py

Related to: #4052

• 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 have a URL in its comments that points to Wikipedia or other similar explanation.
• If this pull request resolves one or more open issues then the commit message contains Fixes: #{$ISSUE_NO}.

[poyea]

Thank you for your pull request!🤩