[JAVA] 배열의 평균값

https://school.programmers.co.kr/learn/courses/30/lessons/120817

프로그래머스

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