代码如下:
import java.util.Scanner;
public class App {
public static void main(String[] argv) {
Scanner scanner = new Scanner(System.in);
int n = scanner.nextInt();
for (int i = 0; i < n; i++) {
int m = Math.abs((n / 2) - i);
for (int k = 0; k < m; k++)
System.out.print(' ');
m = n - Math.abs((n / 2) - i) * 2;
for (int j = 0; j < m; j++) {
System.out.print('*');
}
System.out.println();
}
}
}
运行结果: