Add solution for Project Euler problem 72 (#3122)

* Added solution for Project Euler problem 72.

* Update type annotations and 0-padding of the directory name. Reference: #3256

* Rename sol1.py to sol2.py

* Added newline at the end of sol2.py

* Revert sol1.py

fpringle committed 5y ago

d8f5b31fab57cc009e87a8d62c8d03075f66e9bd

Parent: 9d745b6

Committed by GitHub <noreply@github.com> on 10/16/2020, 9:42:51 AM