用星星画菱形--Java

用星星画菱形

public class Hello{

    public static void main(String[] args) {

        char star = '\u2605';

        System.out.println("Hello " + star + " World!");

        // output a diamond shape with stars

        int temp1 = 0, temp2 = 0;

        for(int i=1; i<=4; ++i){

            temp1 = 4-i;

            temp2 = 2*(i-1)+1;

            while(temp1 > 0){

                System.out.print("  "); // one star char width = two spacing

                temp1--;

            }

            while(temp2 > 0){

                System.out.print(star);

                temp2--;

            }

            System.out.println();

        }

        for(int j=1; j<=3; ++j){

            temp1 = j;

            temp2 = 2*(3-j)+1;

            while(temp1 > 0){

                System.out.print("  ");

                temp1--;

            }

            while(temp2 > 0){

                System.out.print(star);

                temp2--;

            }

            System.out.println();

        }

    }

}

星星是个符号，其宽度有两个空格大小，utf-8编码为：\u2605, 代码输出结果为：

完！