* added radix tree to data structures
* added doctests
* solved flake8
* added type hints
* added description for delete function
* Update data_structures/trie/radix_tree.py
* Update radix_tree.py
* Update radix_tree.py
* Update radix_tree.py
Co-authored-by: Alex de la Cruz <alex@Alexs-MacBook-Air.local>
Co-authored-by: Christian Clauss <cclauss@me.com>
* Fix type annotations for trie.py
* Add strict type annotations to trie.py
Annotate return type for all functions and type for "nodes"
* updating DIRECTORY.md
* Format trie.py
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
* Tighten up psf/black and flake8
* Fix some tests
* Fix some E741
* Fix some E741
* updating DIRECTORY.md
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>