[프로그래머스/Java] 배열 만들기 5

-Code

import java.util.ArrayList;

class Solution {
    public int[] solution(String[] intStrs, int k, int s, int l) {
        ArrayList<Integer> answer = new ArrayList<>();

        for (String num: intStrs) {
            int n = Integer.parseInt(num.substring(s , s + l));
            if (n > k) answer.add(n);
        }

        return answer.stream().mapToInt(Integer::intValue).toArray();
    }
}