[Programmers] Lv.0 | 중복된 숫자 개수 | Java

문제

https://school.programmers.co.kr/learn/courses/30/lessons/120583

 

풀이

import java.util.*;

class Solution {
    public int solution(int[] array, int n) {
        int count = 0;
        
        for (int num : array) {
            if (num == n) {
                count++;
            }
        }
        
        return count;
    }
}

import java.util.*;

class Solution {
    public int solution(int[] array, int n) {
        return (int) Arrays.stream(array)
            .filter(num -> num == n)
            .count();
    }
}