Add a program to evaluate a string in prefix notation (Polish Notation) (#1675)

* Create infix_evaluation.py

* fix doctests

* Rename infix_evaluation.py to prefix_evaluation.py

* Add prefix_evaluation.py to directory

Leon Morten Richter committed 6y ago

4607cd48b6e3ded8be0c2d1915c9388367d79147

Parent: 2cb6a65

Committed by onlinejudge95 <44158581+onlinejudge95@users.noreply.github.com> on 1/12/2020, 9:30:40 AM