- https://gist.github.com/meetKazuki/28fb3a1d80e46d21c02587bf873eddc6
- https://github.com/DonaldKellett/Strive-Qualified-Test-Run-Solutions
- https://github.com/phamtuanchip/qualified_io/tree/master/src
- https://github.com/ledio5485/qualified-challenge/tree/master/src/main/java/io/qualified/challenge