java嵌套for循环基础练习 -空心金字塔

package com.qf.refor;

public class KongXinJinZiTa {
    public static void main(String[] args) {
        for (int i = 1; i <= 5; i++) {//总层数
            for (int k = 1; k <= 5 - i; k++) {//输出空格
                System.out.print(" ");
            }
            for (int j = 1; j <= (2 * i - 1); j++) {//控制打印次数
                if (j ==1 || j == 2*i-1 || i == 5){//打印条件
                System.out.print("*");
                }else {
                    System.out.print(" ") ;
                }
            }
            System.out.println();
        }
    }
}