/** *//**
* Rhombus.java * Java控制台打印一个菱形 * @author 邓超(CodingMouse) * @version 0.1 2008-5-6 * 开发/测试环境：jdk1.6 + eclipse SDK 3.3.2
*/
//导入Scanner类import java.util.Scanner;public class Rhombus ...{ 
public static void main(String[] args) ...{ Scanner input = new Scanner(System.in); //循环标识 boolean con = true; //菱形的层数和转换计算方式后的层数 int border , num = 0; do ...{ con = false; System.out.print("请输入要打印的菱形层数[不小于3的奇(整)数]："); //菱形的层数 border = input.nextInt(); if (border % 2 == 0 || border < 3) ...{ System.out.println("只能输入不小于3的奇(整)数！请重试！"); con = true;
} } while (con); //转换层数计算方式 num = border - (border - (border % 2)) / 2; //控制台输出提示 System.out.println(border + "层菱形图案如下： "); // 打印上半部分图象 for (int i = 1; i <= num; i++) ...{ for (int j = 1; j <= num - i; j++) ...{ //System.out.print(" "); //这样瘦长一点 System.out.print(" "); } for (int j = 1; j <= 2 * (i + 1) - 3; j++) ...{ //System.out.print("*"); //这样瘦长一点 System.out.print("* "); } System.out.println(); } // 打印下半部分图象 for (int i = 1; i <= num - 1; i++) ...{ for (int j = 1; j <= i; j++) ...{ //System.out.print(" "); //这样瘦长一点 System.out.print(" "); } int k = num - 1 - i; for (int j = 1; j <= 2 * k + 1; j++) ...{ //System.out.print("*"); //这样瘦长一点 System.out.print("* "); } System.out.println(); } }}