输入n，输出如下格式
如输入5 输出为
123454321
234505432
345000543
450000054
500000005
------解决方案--------------------
- Java code
public class Test { public static void main(String[] args) { int n = 5; for (int i = 0, k = -n + 1; i < n; i++) { for (int j = k; j < n; j++) { System.out.print(i > Math.abs(j) ? 0 : n - Math.abs(j) + i); } System.out.println(); } }}