Majority Element solved using java

[soumyaranjan-panda]

Description

Solved MAJORITY_ELEMENT using java.

Question

Given an array nums of size n, return the majority element.

• [x] New feature (non-breaking change which adds functionality)
• [x] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have made corresponding changes to the documentation
• [x] I have added tests that prove my fix is effective or that my feature works