문제

내 풀이

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