[Programmers] 평균 구하기

Python

def solution(arr):
    answer = sum(arr) / len(arr)
    return answer

Java

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

Javascript

function solution(arr) {
    var answer = 0;
    for(let i = 0; i < arr.length; i++) {
        answer += arr[i];
    }
    answer /= arr.length;
    return answer;
}