Add Useful Resources for Competitive Coding

[Vishruth-S]

A new file USEFUL_RESOURCES.md has been created for adding some useful resources that can help with Competitive Programming. ✨
Some examples include Articles related to CP/DS & Algo, tips for cracking ACM ICPC/Code Jam etc, Cheatsheets, tips for cracking coding interviews and many more.
If you have got any such links to some resources which you feel would be really useful, you may add them to USEFUL_RESOURCES.md 😃

Alternatively, If you have got something useful but is not a link which can be added (For eg: some code snippet etc), You can create an Issue for adding the same to this repository. 🙃

[kingjuno]

I will add some algorithm books

[alokkumarak]

Can I Add Some Useful Algorithm and Codes for Data Structure ...?

[baranwal]

I have added a link with my PR please check that.

[Vishruth-S]

@baranwal Merged 👍

[baranwal]

@baranwal Merged +1

Thanks 😃

[yamini27]

Hey @Vishruth-S !
I've added a website link to Codewars website in PR #436 . Please review it and approve it as hacktoberfest-accepted if you think it's alright. Thanks!

[baranwal]

I have added another link please review my PR.

[Anish0203]

Hello @Vishruth-S,
I have added a link to the book in the PR #506 . Please review it and approve it as hacktoberfest-accepted if you think it is a good contribution. Thanks in advance.