Contribution Guide

• Add new page under section: e.g. adding a new leetcode problem under leetcode sections. To do so, please follow the workflow: pull remote origin -> make local changes -> commit you changes -> make a pull request. I will merge your pr and deploy it to the website.
• Add new sections: before do so, please create an issue describing what you want to add, why you want to add. I will review and add section accordingly.