Leetcode questions(unsolved) related to strings

[shruti170901]

Solve one/more leetcode questions(unsolved in this repo) related to strings and send a PR

[Sachin-Prasad-2001]

Hi, I would like to work on this issue.

[ritikalath]

Hi, can I work on this issue?

[asthabhatiwara]

I want to work upon this issue .

[AbhiC7721]

I would like to work on this issue

[tusharnankani]

I would like to work on these.
Also, is it necessary that the solutions have to be in C++?

[anubhab-code]

I would like to contribute to this.

[Deb2002]

Please assign me this

[arihantbansal]

I'd like to contribute to this.

[NirvikC]

please assign this to me