原题地址:https://leetcode.com/problems/majority-element/description/
题目描述
169.Majority Element
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.
在保证题目所给的一串元素里出现次数最多的元素的次数大于⌊ n/2 ⌋的情况下，找到这个元素。
思路
我的思路很简单，就是先排序，然后因为题目保证了元素的出现次数大于⌊ n/2 ⌋，所以排完序以后在⌊ n/2 ⌋这个位置的元素就是目标元素。
代码
class Solution {
public:
int majorityElement(vector<int>& nums) {
sort(nums.begin(),nums.end());
return nums[nums.size()/2];
}
};
网友评论