Majority Element 查找出现一半的数字

Majority Element

Given an array of size n, find the majority element. The majority element is the element that appears more than ​​⌊ n/2 ⌋​​

You may assume that the array is non-empty and the majority element always exist in the array.

Credits:
Special thanks to ​@ts for adding this problem and creating all test cases.

class Solution {
public:
    int majorityElement(vector<int> &num) {
        
        sort(num.begin(),num.end());
        return num[num.size()/2];
    }
};