平均值的计算

解题思路:

注意事项:

参考代码:

import java.util.Scanner;

    public class Main {

        public static void main(String[] args) {

            Scanner sc = new Scanner(System.in);

            int[] arr = new int[10];

            for (int i = 0; i < 10; i++) {

                arr[i] = sc.nextInt();

            }

            sc.close();

            int sum = 0;

            for (int i = 0; i < arr.length; i++) {

                sum += arr[i];

            }

//这里用double类型，以防平均值是小数而出现错误

            double avg = (double) sum / 10;//这里除以10也行，除以arr.length也行

            int count = 0;

            for (int i = 0; i < arr.length; i++) {

                if (arr[i] > avg) {

                    count++;

                }

            }

            System.out.println( count);

        }

    }