Lv.1 폰켓몬

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

코딩테스트 연습 - 폰켓몬

 

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

성공