Add solutions to Hackerrank questions

[rushendra910]

@restrictedCodex please assign me this issue under the 'hacktoberfest2021' tag.

[ShubhamSj07]

@rushendra910 , please go ahead🙌🏻✨

[aritrasen12345]

I also wanna contribute. Assign me also.

[Roshan5401]

Requesting to be assigned to this PR under the 'hacktoberfest2021' label. Thankyou. i am a 5 star coder at hackerrank .i would also like to contribute in it.

[shahidcode]

Pls assign this issue to me

[ShubhamSj07]

Pls assign this issue to me

Pls go ahead🙌🏻✨

[Akshat-Pandey16]

Hello @ShubhamSj07, can I add a solution to any question of hackerrank? or are there specific questions

[ShubhamSj07]

Hello @ShubhamSj07, can I add a solution to any question of hackerrank? or are there specific questions

Please go ahead & add few 🙌🏻✨