```java public class RussianBox { public static void main(String[] args) { int n = 5; // 可以修改这个值来改变俄罗斯方框的大小 for (int i = 1; i <= n; i++) { for (int j = 1; j <= n; j++) { if (i == 1 || i == n || j == 1 || j == n) { System.out.print("*"); } else { System.out.print(" "); } } System.out.println(); } } } ``` [2024-07-17 11:38:42 | AI写代码神器 | 146点数解答]