Hacktoberfest leetcode challenge

Please submit your leetcode solutions to this hacktoberfest repository.

Submissions of all languages allowed

Steps to create a submission ->

1. Create a fork of this repository and add the solution in the folder of the language in which you are coding.
2. Please provide the name of leetcode problem and the link to the problem.
3. Set the filename to problem name.
4. Create a pull request with the hacktoberfest and hacktoberfest-accepted tags.
5. Enjoy hacktoberfest and happy leetcoding.