获取数值型数组的平均值(分别使用增强for循环和普通for循环)

package com.Summer_0419.cn;

/**

 * @author Summer

 * 获取数值型数组的平均值

 */

public class Test_Method14 {

    public static void main(String[] args) {

        double[] a = { 100, 12, 102, 180, 13, 15.12 };// 静态方法声明一个变量

        a.toString();//toString方法进行遍历

        double b = avg(a);

        System.out.println("这是增强for循环返回的平均值"+b);

        double c = avg1(a);

        System.out.println("这是普通for循环返回的平均值"+c);

    }

    private static double avg1(double[] array) {

        double sum = 0;

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

            sum+=array[i];

        }

        return sum/array.length;

    }

    private static double avg(double[] a) {

        double sum = 0;

        for (double d : a) {

            sum+=d;

        }

        return sum/a.length;

    }

}