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.

求众数，一个数组中某个元素的个数超过了数组个数的一半，返回该元素。

public class Solution {
    public int majorityElement(int[] nums) {
       if (nums.length == 1) {
			return nums[0];
		}
		Arrays.sort(nums);
		int mostNum = nums[0];//先假设第一个元素的个数最多
		int count = 1;
		for (int i = 1; i < nums.length; i++) {
			if (nums[i] == mostNum) {
				count++;
				if (count > nums.length / 2) {
					return nums[i];
				}
			}else {
				mostNum = nums[i];//从不相等的元素开始重新和后面对比
				count = 1;
			}
		}
        return 0;
    }
}