Given an array nums of size n, return the majority element.
The majority element is the element that appears more than ⌊n/2⌋ times. You may assume that the majority element always exists in the array.
Input: nums = [3,2,3]
Output: 3
Input: nums = [2,2,1,1,2,2]
Output: 2
Input: nums = [1,1,1,2,2,2,2]
Output: 2
n == nums.length1 <= n <= 5 * 104-109 <= nums[i] <= 109