Given an array of size n, find the majority element. The majority element is the element that appears more than ⌊ n/2 ⌋ times.
You may assume that the array is non-empty and the majority element always exist in the array.
s思路:
1. 有一个很著名的算法专门干这个的。
2. 明天思考一下,这个方法为啥行?
class Solution {
public:
int majorityElement(vector<int>& nums) {
//
int count=0;
int mj=0;
for(int num:nums){
if(count==0) mj=num;
if(num==mj) count++;
else count--;
}
return mj;
}
};