计算n*n整型数组中主对角线和副对角线上数字之和

[java]代码库

import java.util.*;
public class Main {
    public static void main(String[] args) {
        // TODO code application logic here
        Scanner shuru=new Scanner(System.in);
        int [][] a;
        int i,j,n,he=0,he2=0;
        n = shuru.nextInt();
        a = new int [n][n];
        for(i=0;i<n;i++)
        {
            for(j=0;j<n;j++)
            {
                a[i][j] = shuru.nextInt();
            }
        }
        for(i=0;i<n;i++)
        {
            he = he+a[i][n-1-i];
        }
        for(i=0;i<n;i++)
        {
            he2 = he2+a[i][i];
        }
        System.out.println(he2+" "+he);
    }
}