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.

解题思路：

思路请看剑指offer的面试29.。。。。。

class Solution { public: int majorityElement(vector<int>& nums) { int n=nums.size(); if(n==1)return nums[0]; int pre=nums[0]; int cnt=1; for(int i=0;i<n;i++){ if(nums[i]==pre)cnt++; else cnt--; if(cnt==0){ pre=nums[i]; cnt=1; } } return pre; } };