lintcode 主元素解决方法

class Solution {
public:
    /**
     * @param nums: A list of integers
     * @return: The majority number
     */
    int majorityNumber(vector<int> nums) {
        // write your code here
        int cnt = 0;
        int result = 0,i;
        for (i = 0 ; i < nums.size() ; i++)
        {
            if (cnt == 0)
            {
                result = nums[i] ;
                cnt++ ;
            }
            else
            {
                if (result != nums[i])
                {
                    cnt-- ;
                }
                else
                {
                    cnt++ ;
                }
            }
        }
        return result ;
    }
};