• Do you want to add a New solution ?
• Or you solution is better than already added solution ?

Then go ahead and create a pull request. Please read Pull Request Process for simple steps to contribute

Shuvayan the repo is good,but it would be very helpful that you sort the questions according to the topic.Like for each topic you can add a list of questions.And also include a heading of articles,where you can put all the resources related to that topic.
Thanks.