[Programmers]平均を求める-練習問題

// 평균 구하기 - 연습문제
public class AverageOfArray {

	public double solution(int[] arr) {
		
		double sum = 0;
		for(int ele : arr) {
			sum+= ele;
		}
		return sum / arr.length;
	
//		return Arrays.stream(arr).average().orElse(0); // stream 이용
	}

	public static void main(String[] args) {

		AverageOfArray s = new AverageOfArray();

		int arr1[] = { 1, 2, 3, 4 };
		int arr2[] = { 5, 5 };

		System.out.println(s.solution(arr1));
		System.out.println(s.solution(arr2));

	}

}