added new problem

[Ashasindhu]

Issue Number:

This submission will close the issue #44

Submissions Checklist:

• Have you followed the guidelines in CONTRIBUTING.md?
• Have you checked there aren't other open Pull Requests for the same hackerrank problem?
• Have you successfully submitted your code in hackerrank?
• Is your file name exactly same as the problem name of hackerrank, followed by the proper extension?
• Have you ensured that you have put the files in appropriate folders? (Folders are made according to the subdomain of hackerrank practice problems).

Hacktoberfest Contributor:

• Are you a hacktoberfest contributor?

Hackerrank Problem Link:

https://www.hackerrank.com/challenges/java-string-reverse/problem?isFullScreen=true

Submitted Hackerrank Solution Link:

https://www.hackerrank.com/challenges/java-string-reverse/submissions/code/293570599

Any other changes you made or something you would like to mention?

NA

[Riddhi9570]

@Ashasindhu Thanks for contributing! Following changes are requested:-

• Update your repo from origin remote.
• You have added an empty Java file. Please add your solution to it.
• Move your file to appropriate folder : Java/Strings/