✔ 문제

✔ 풀이

import java.util.Arrays;
class Solution {
  public int[] solution(int[] numbers) {
    int[] answer = new int[numbers.lenght];
    for(int i = 0; i < numbers.length; i++) {
      answer[i] = numbers[i] * 2;
    }
    return answer;
  }
}