프로그래머스 - 배열 두 배 만들기

https://school.programmers.co.kr/learn/courses/30/lessons/120809

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