[Programmers] Lv1: 평균 구하기(12944)

문제

- 링크: https://school.programmers.co.kr/learn/courses/30/lessons/12944

 

풀이

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