package com.itranswarp.learnjava; public class Main { public static void main(String[] args) { // 用二维数组表示的学生成绩: int[][] scores = { // { 82, 90, 91 }, // { 68, 72, 64 }, // { 95, 91, 89 }, // { 67, 52, 60 }, // { 79, 81, 85 }, // }; double average = 0; double sum_avg = 0; for(int[] score:scores) { int sum = 0; for(int s:score) { sum += s; } double avg = (double)sum/score.length;//计算一个学生的平均成绩 sum_avg += avg; } average = sum_avg/scores.length; System.out.println(average); if (Math.abs(average - 77.733333) < 0.000001) { System.out.println("测试成功"); } else { System.out.println("测试失败"); } } }
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