public class Main{

/**

* @param args

*/

public static void main(String[] args){

int[][] scores = {

{ 82, 90, 91 },

{ 68, 72, 64 },

{ 95, 91, 89 },

{ 67, 52, 60 },

{ 79, 81, 85 },

};

//TODO Auto-generated

double average = 0;

int num=0 ,sum=0;

for (int[] arr0 : scores) {

for(int n : arr0) {

num++;

sum += n;

}

}

average = (double)sum / num;

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");

}

}

}