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Loops14

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Nov 9th, 2012
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  1. using System;
  2.  
  3. class SpiralArray
  4. {
  5. static void Main()
  6. {
  7. Console.WriteLine("Enter a number");
  8. int number = int.Parse(Console.ReadLine());
  9. int[,] array = new int[number, number];
  10. int counter = 1;
  11. int rowIndex = 0;
  12. int colIndex = 0;
  13. int maxRowIndex = number - 1;
  14. int maxColIndex = number - 1;
  15. do
  16. {
  17. for (int i = colIndex; i <= maxColIndex; i++)
  18. {
  19. array[rowIndex, i] = counter; // right
  20. counter++;
  21. }
  22. rowIndex++;
  23. for (int i = rowIndex; i <= maxRowIndex; i++)
  24. {
  25. array[i, maxColIndex] = counter; // down
  26. counter++;
  27. }
  28. maxColIndex--;
  29. for (int i = maxColIndex; i >= colIndex; i--)
  30. {
  31. array[maxRowIndex, i] = counter; //left
  32. counter++;
  33. }
  34. maxRowIndex--;
  35. for (int i = maxRowIndex; i >= rowIndex; i--)
  36. {
  37. array[i, colIndex] = counter; //up
  38. counter++;
  39. }
  40. colIndex++;
  41. }
  42. while (counter <= number * number);
  43.  
  44. for (int rows = 0; rows < array.GetLength(0); rows++)
  45. {
  46. for (int cols = 0; cols < array.GetLength(1); cols++)
  47. {
  48. Console.Write(array[rows,cols] + " ");
  49. }
  50. Console.WriteLine();
  51. }
  52.  
  53. }
  54. }
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