【蓝桥杯】历届试题 打印十字图

 1 import java.util.Scanner;
 2 
 3 public class Main {
 4     public static void main(String[] args) {
 5         int n = new Scanner(System.in).nextInt();
 6         char a[][] = new char[n * 4 + 5][n * 4 + 5];
 7         for (int i = 0; i < a.length; i++) {
 8             for (int j = 0; j < a[i].length; j++) {
 9                 a[i][j] = ‘.‘;
10             }
11         }
12         int t = 0;
13         for (int i = 0; i < n; i++, t += 2) {
14             for (int j = t + 2; j < a.length - t - 2; j++) {
15                 a[t][j] = ‘$‘;
16                 a[j][t] = ‘$‘;
17                 a[a.length - t - 1][j] = ‘$‘;
18                 a[j][a.length - t - 1] = ‘$‘;
19             }
20             for (int j = t; j <= t + 2; j++) {
21                 a[j][t + 2] = ‘$‘;
22                 a[t + 2][j] = ‘$‘;
23                 a[a.length - t - 3][j] = ‘$‘;
24                 a[j][a.length - t - 3] = ‘$‘;
25             }
26             for (int j = a.length - 1 - t - 2; j <= a.length - 1 - t; j++) {
27                 a[j][t + 2] = ‘$‘;
28                 a[t + 2][j] = ‘$‘;
29                 a[a.length - 1 - t - 2][j] = ‘$‘;
30                 a[j][a.length - 1 - t - 2] = ‘$‘;
31             }
32         }
33         int m = a.length / 2;
34         for (int j = a.length / 2 - 2; j <= m + 2; j++) {
35             a[j][m] = a[m][j] = ‘$‘;
36         }
37 
38         for (int i = 0; i < a.length; i++) {
39             for (int j = 0; j < a[i].length; j++) {
40                 System.out.print(a[i][j]);
41             }
42             System.out.println();
43         }
44     }
45 }