Bit-manupulation problem.

[PradeepFSTdhane123]

Bit manupulation.

I want to create a separate folder name bit manupulation in DSA section and I want to add two well know problem in java
Q.How to know if a number is a power of 2?
Q.Find XOR of all subsets of a set?

[PradeepFSTdhane123]

@indrakishore "I would love the opportunity to contribute and work on this project.
Could you please assign the issue to me? I will explain problem statement , approach full explanation , time complexcity and space complexcity