Fix errors in Quantum algorithm (#3273)

* Fix pre-commit errors in Quantum algorithm

* updating DIRECTORY.md

* Fix doctest

* Update not_gate.py

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

Dhruv committed 5y ago

23ab159f30ece2e9171efae57119ada93d954645

Parent: 34d63d5

Committed by GitHub <noreply@github.com> on 10/14/2020, 5:58:52 AM