W3School TIY Editor

public class Main { public static void main(String[] args) { // 存储不同年龄的数组 int ages[] = {20, 22, 18, 35, 48, 26, 87, 70}; float avg, sum = 0; // 获取数组长度 int length = ages.length; // 遍历数组元素 for (int age : ages) { sum += age; } // 用总和除以长度计算平均值 avg = sum / length; // 打印平均值 System.out.println("平均年龄是: " + avg); } }