Leetcode : Add leetcode solutions

[codemii]

Add algorithms
Format will be like this :
../main/Leetcode/{Language}/{FileName}

[yashashwini16]

hey @codemii please assign this task for me!

[Somil-Shukla]

@codemii please assign this issue to me

[Anujjoshi021]

Hey @codemii,
I want to contribute, can you assign this issue to me.

[amanmakhija]

Hey @codemii ,
I want to contribute some Leetcode solutions.
Can you please assign this issue to me?

Regards,
@amanmakhija

[Udbhav-regadamilli]

Hey @codemii ,
I want to contribute some Leetcode solutions in python.
Can you please assign this issue to me