Add gfg algorithms

[restrictedCodex]

Add solutions to the GFG problems in C++

[ShubhamSj07]

@restrictedCodex, I would like to add a few programs

[MohitAswani]

@restrictedCodex, Can you assign me this issue?

[ShubhamSj07]

@MohitAswani ,
you can contribute
go ahead & start adding gfg algo/programs🚀

[rushendra910]

@restrictedCodex , I would like to work on adding gfg solutions in C++.
Please assign this to me.

[restrictedCodex]

@rushendra910 create a new issue i will assign it to you

[rushendra910]

@restrictedCodex I did the same. Please assign it to me. Thank you.

[abhijeet-crypto]

i would like to work on this in java. please assign to me
adding gfg algo.

[restrictedCodex]

@abhijeet-crypto make a PR we will add it

[abhijeet-crypto]

@restrictedCodex review my PR #59

[shawakchoudhary]

@restrictedCodex I want to gfg code.
Can you please Assign it to me?