└── DNA pattern


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


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