[프로그래머스] 폰켓몬 java

https://programmers.co.kr/learn/courses/30/lessons/1845

코딩테스트 연습 - 폰켓몬

import java.util.*;
class Solution {
    public int solution(int[] nums) {
        HashSet<Integer> hs = new HashSet();
        for(int i = 0; i<nums.length; i++){
            hs.add(nums[i]);
        }
        if(hs.size()>nums.length/2) return nums.length/2;
        return hs.size();
    }
}