题解 | #空心正方形图案#
空心正方形图案
https://www.nowcoder.com/practice/72347ee949dc47399186ee183632f303
import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner scan = new Scanner(System.in); while (scan.hasNext()) { int n = scan.nextInt(); for (int i = 1; i <= n; i++) { if (i != 1 && i != n) { System.out.print("* "); for (int j = 1; j <= n - 2; j++) System.out.print(" "); System.out.print("* "); } else for (int j = 1; j <= n; j++) { System.out.print("* "); } System.out.println(); } } } }