[레벨1] 폰켓몬 (JAVA)

import java.util.*;

class Solution {
    public int solution(int[] nums) {
        int answer = 0;
        HashSet<Integer> set = new HashSet<>();
        
        for(int i : nums){
            set.add(i);
        }
        
        if(set.size() < nums.length/2)
            answer = set.size();
        else
            answer = nums.length/2;
        
        
        return answer;
    }
}