169. Majority Element

2017-01-09  本文已影响0人  juexin

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

public class Solution {
    public int majorityElement(int[] nums) {
        int candidate = 0;
        int count = 0;
        for(int i=0;i<nums.length;i++)
        {
            if(count == 0)
            {
                candidate = nums[i];
                count = 1;
            }
            else
            {
                if(nums[i] == candidate)
                  count++;
                else
                  count--;
            }
        }
        return candidate;
    }
}
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