public class ArrayTest {
public static void main(String[] args) {
int arr[][]={{1,2,3},{4,5,6},{7,8,9}},tem=0,sum=0;
for (int i = 0; i < arr.length; i++) {
for (int j = 0; j < arr[i].length; j++) {
System.out.print(arr[i][j]+" ");
if(i<=j)
sum+=arr[i][j];
if(i==j)
tem+=arr[i][j];
}
System.out.println();
}
System.out.println("\n对角和:"+tem);
System.out.println("\n三角和:"+sum);
}
}
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