在Java中打印*的金字塔

import java.util.Scanner;

public class Pyramid {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.print("请输入金字塔的层数：");
        int n = input.nextInt();
        
        for (int i = 1; i <= n; i++) {
            // 打印空格
            for (int j = 1; j <= n - i; j++) {
                System.out.print(" ");
            }
            
            // 打印星号
            for (int k = 1; k <= 2 * i - 1; k++) {
                System.out.print("*");
            }
            
            // 换行
            System.out.println();
        }
    }
}