* Update lempel_ziv.py
* Update build.yml
* updating DIRECTORY.md
* fix doctest in 2_hidden_layers_neural_network.py
* one more doctest
* simplified tests
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
* Update lempel_ziv.py
* Update build.yml
* updating DIRECTORY.md
* fix doctest in 2_hidden_layers_neural_network.py
* one more doctest
* simplified tests
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>