用java程序建立一个3*3的二维数组

用java程序建立一个3*3的二维数组

import java.util.Random;

public class demo {
public static void main(String[] args) {
int[][] Array = new int[3][3];
Random random = new Random();
for (int i = 0; i < Array.length; i++) {
int sum=0;
for (int n = 0; n < Array[i].length; n++) {
Array[i][n] = random.nextInt(99) + 1;
sum+=Array[i][n];
}
System.out.println("第"+(i+1)+"行的和"+sum);
System.out.println("第"+(i+1)+"行的平均数"+(sum/3));
}
}
}

2015-05-26

public static void main(String[] args)
{
int[][] arr = new int[3][3];

for(int i = 0;i < 3;i++){
int sum = 0,avg = 0;
for(int j = 0;j < 3;j++){
arr[i][j] = (int)(Math.random()*100);
sum+=arr[i][j];
System.out.println("arr["+i+"]["+j+"]:"+arr[i][j]);
}
avg = sum / 3;
System.out.println();
System.out.println("row:"+i+" sum:"+sum+" avg:"+avg);
}
}2015-05-26