fixed error in factorial.py (#1888)

* Update factorial.py

* updating DIRECTORY.md

* Update dynamic_programming/factorial.py

* Update factorial.py

Co-authored-by: mateuszz0000 <mtszzwdzk@gmail.com>
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Co-authored-by: Christian Clauss <cclauss@me.com>

Sanders Lin committed 5y ago

f0d7879a113ecdd6946006f70a6162c8789b8550

Parent: 871f8f4

Committed by GitHub <noreply@github.com> on 8/5/2020, 11:18:41 AM