[프로그래머스/Java] Lv.0 할 일 목록

문제

 

 

728x90

---

풀이

 

 

import java.util.Arrays;
import java.util.stream.IntStream;
 
class Solution {
    public String[] solution(String[] todo_list, boolean[] finished) {
        long falseCount = IntStream.range(0, finished.length)
                .filter(index -> !finished[index])
                .count();
 
        String[] answer = new String[(int) falseCount];
 
        int idx = 0;
        for (int i = 0; i < finished.length; i++) {
            if (!finished[i]) {
                answer[idx] = todo_list[i];
                idx++;
            }
        }
 
        return answer;
    }
}

 

---