[프로그래머스]Lv.1 평균 구하기 C# (Average)

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

프로그래머스

소스코드1

using System.Linq;
public class Solution {
    public double solution(int[] arr) {
        int sum = arr.Sum();
            return (double)sum / (double)arr.Length;
    }
}

소스코드2

using System.Linq;
public class Solution {
    public double solution(int[] arr) {
         return arr.Average();
    }
}