I am so happy to know that you would want to contribute. There are no specific rules, if you've found a problem that is good enough for interview and you want to showcase your solution - Just go ahead, add it and submit a PR.
Please follow these very simple guidelines
- Create a new branch for your PR
- Write modular, readable and well-formatted code.
- Please add problem link on top of your source code, as a comment.
- Please add code which passes all test cases. We love to see the green AC symbol only ✅
I'll make sure it gets merged at the earliest. Cheers and thanks!