169. Majority Element

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.

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

Solution

public class Solution {
        public int majorityElement(int[] nums) {
        int majority = nums[0];
        int count = 1;

        for (int i = 1; i < nums.length; i++) {
            if (count == 0) {
                majority = nums[i];
                count = 1;
            } else {
                count = majority == nums[i] ? count + 1 : count - 1;
            }
        }

        return majority;
    }
}