1 package com.li.FiftyAlgorthm;
2
3 /**
4 * 題目:列印出如下圖案(菱形)
5 *
6 ***
7 *****
8 *******
9 *****
10 ***
11 *
12 *程式分析:先把圖形分成兩部分來看待,前四行一個規律,後三行一個規律,利用雙重 for循環,第一層控制行,第二層控制列。
13 * @author yejin
14 */
15 public class PrintRhombic {
16 static final int HEIGHT = 7;
17 static final int WIDTH = 8;
18
19 public static void main(String[] args) {
20 for (int i = 0; i < (HEIGHT + 1) / 2; i++) {
21 for (int j = 1; j < WIDTH / 2 - i; j++) {
22 System.out.print(" ");
23 }
24 for (int k = 1; k < (i + 1) * 2; k++) {
25 System.out.print('*');
26 }
27 System.out.println();
28 }
29
30 for (int i = 1; i <= HEIGHT / 2; i++) {
31 for (int j = 1; j <= i; j++) {
32 System.out.print(" ");
33 }
34 for (int k = 1; k <= WIDTH - 2 * i - 1; k++) {
35 System.out.print('*');
36 }
37 System.out.println();
38 }
39 }
40