solution(java): Problems 229 and 287

[PrashantDesale2004]

#43 Added the soluition of Majority Element ll in java and cpp with logic behind how to solve the problem with step-by-step

[godkingjay]

Thank you for your contributions. However, it seems like you put your C++ solution in the wrong directory. You put it in /Medium/287. Find Duplicate Number instead of /Medium/229. Majority Element II.

Also, please don't overwrite previous solutions unless they have errors. If you're adding a new solution on a problem but it already has an existing solution, you may do it like this:

// Solution 1
class Solution {
	/*
	 * Solution 1
	 */
}

// Solution 2
class Solution {
	/*
	 * Solution 2
	 */
}

[godkingjay]

Thank you for your contributions!