Add new Problems and codes

[hi-18-K]

You can add new problems and their solution codes. Try adding conceptual and worth time spending problems instead ramdom one.

Format for PR:-

• You can create new file in existing folders or can create a new topic wise or company wise folder.

  • In topicwise folder you can write code for any algorithm with explanation and usecases and problems based on the same.

    • Use CP Algo / Codeforces filter / Leetcode filters / GFG tagwise filter for the same.
    • Add problem Link in extended description. and comments in code.

  • In companywise folder you can add any problem that you have recently seen in any coding contest in any company and found interesting to solve.

    • Add complete description of problem and similar problem links in extended description.
    • Add comments in code so that it is easily understandable.

[kashc11]

I'd like to contribute, can you assign this to me?