打印九行星星菱形练习

打印9行星星菱形

package com.chen.cm.struct;

public class TestDemo02 {
    public static void main(String[] args) {
//菱形上半部分5行
        for (int i = 1; i <= 5; i++) {
            for (int j = 5; j >=i; j--) {
                System.out.print(" ");
            }
            for (int j = 1; j <=i; j++) {
                System.out.print("*");
            }
            for (int j = 1; j <i; j++) {
                System.out.print("*");
            }
            for (int j = 5; j >=i; j--) {
                System.out.print(" ");
            }
            System.out.println();
        }
//菱形下半部分4行 其中下半部分第一行用continue跳过
        for (int m = 1; m <= 5; m++) {
            if(m==1){
                continue;
            }
            for (int n = 1; n <= m; n++) {
                System.out.print(" ");
            }
            for (int n = 5; n >=m; n--) {
                System.out.print("*");
            }
            for (int n = 5; n >m; n--) {
                System.out.print("*");
            }
            for (int n = 1; n <= m; n++) {
                System.out.print(" ");
            }
            System.out.println();
        }

    }
}