public class PingJunFen {    public static void main(String[] args) {        int[][] scores = {                { 82, 90, 91 },                { 68, 72, 64 },                { 95, 91, 89 },                { 67, 52, 60 },                { 79, 81, 85 },        };        // TODO:        double sum = 0;        for (int row=0;row < scores.length;row++) {            for (int col = 0; col < 3; col++) {                sum = sum + scores[row][col];            }        }        System.out.println(sum);        System.out.println(scores.length);        double average = 0;        average = sum/(scores.length*3);        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");        }    }}