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  1. import java.util.Scanner;
  2.  
  3. public class Main {
  4. 	public static void main (String[] args) {
  5. 		Scanner scanner = new Scanner(System.in);
  6. 		int n = scanner.nextInt();
  7. 		int [][] s = new int[50][50];
  8. 		for(int i=0; i<n; i++)
  9. 		{
  10. 			s[0][i]=1;
  11. 			s[n-1][i]=1;
  12. 			s[i][n-1]=1;
  13. 		}
  14. 		int h=n-2, d=n-2;
  15. 		int pointx=n-1, pointy=0; 
  16. 		while(true)
  17. 		{
  18. 			for(int i=0; i<h; i++)
  19. 			{
  20. 			    s[pointx-i][pointy]=1;
  21. 			}
  22. 			pointx-=h-1;
  23. 			h-=2;
  24. 			if(h<=0)
  25. 			    break;
  26. 			for(int i=0; i<d; i++)
  27. 			{
  28. 			    s[pointx][pointy+i]=1;
  29. 			}
  30. 			pointy+=d-1;
  31. 			d-=2;
  32. 			if(d<=0)
  33. 			    break;
  34. 		    for(int i=0; i<h; i++)
  35. 			{
  36. 			    s[pointx+i][pointy]=1;
  37. 			}
  38. 			pointx+=h-1;
  39. 			h-=2;
  40. 			if(h<=0)
  41. 			    break;
  42. 			for(int i=0; i<d; i++)
  43. 			{
  44. 			    s[pointx][pointy-i]=1;
  45. 			}
  46. 			pointy-=d-1;
  47. 			d-=2;
  48. 			if(d<=0)
  49. 			    break;
  50. 		}
  51. 		s[n/2][n/2]=0;
  52. 		for(int i=0; i<n; i++)
  53. 		{
  54. 			for(int j=0; j<n; j++)
  55. 			{
  56. 			    System.out.print(s[i][j]);
  57. 			}
  58. 			System.out.println();
  59. 		}
  60. 	}
  61. }
Success #stdin #stdout 0.07s 2184192KB
comments (?)
stdin 
7
stdout 
1111111
0000001
1111101
1000101
1011101
1000001
1111111
https://ideone.com/Ug55rB
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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