* chore(sudoku): added type hints [HACKTOBER-FEST]
* updating DIRECTORY.md
* chore: added matrix type alias
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
* chore(sudoku): added type hints [HACKTOBER-FEST]
* updating DIRECTORY.md
* chore: added matrix type alias
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>