class Solution {
    public int[] solution(int start, int end) {
        int[] answer = {};
        return answer;
    }
}

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해결법

방법 1

import java.util.*;

class Solution {
    public List solution(int start, int end) {
        
        List<Integer> answer = new ArrayList<>();
        
        for (int i = start; i <= end;i++) {
            answer.add(i);
        }
        
        return answer;
    }
}

• ArrayList

  참고: 배열, ArrayList - (2) 값 추가

방법 2

class Solution {
    public int[] solution(int start, int end) {
    
        int[] answer = new int[end - start + 1];
        
        for (int i = 0; i < answer.length; i++) {
            answer[i] = start;
            start++;
        }

        return answer;
    }
}

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카운트 업