java输出倒立金字塔

import java.util.Scanner;
public class Ch1_1_1 {
    public static void main(String[] args) {
        int i, j, k, n;
        Scanner input = new Scanner(System.in);
        System.out.print("请输入金字塔的层数");
        n = input.nextInt();
        for (i = 1; i <= n; i++) {
            for (j = 0; j <= i - 1; j++) {
                System.out.print(" ");
            }
            for (k = 1; k <= (2 * n - (2 * i - 1)); k++) {
                System.out.print("*");
            }
            System.out.println("");
        }
    }
}