public class ScoreDemo {public static void main(String[] args) {int m = 2;//班级个数int n = 3;//每个班级的人数int[][] ary = new int[m][n];inputScore(ary);//输入每个人的分数,保存到数组printAvg(ary);//打印平均分}private static void printAvg(int[][] ary) {int in...