package dituTest;
import java.util.Scanner;
public class Test2 {
public static void main(String[] args) {
System.out.println("请输入数字");
int n = new Scanner(System.in).nextInt();//接收控制台输入语句 既边长n
for (int i = 0; i < 2 * n; i++) {
for (int j = 0; j < 2 * n; j++) {
if (j == n - i - 1 || j == n + i - 1 || i == 3 * n - j - 3 || i == n + j - 1) {
if ((i == 2 * n - 1 && j == n - 2) || (i == 2 * n - 1 && j == n) || (j == 2 * n - 1 && i == n - 2)
|| (j == 2 * n - 1 && i == n)) {
System.out.print(" ");
} else {
System.out.print("* ");
}
} else {
System.out.print(" ");
}
}
System.out.println();
}
}
}