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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. // A function implementing Shell sort.
  5. void ShellSort(int a[], int n)
  6. {
  7. 	int i, j, k, temp;
  8. 	// Gap 'i' between index of the element to be compared, initially n/2.
  9. 	for(i = n/2; i > 0; i = i/2)
  10. 	{
  11. 		for(j = i; j < n; j++)
  12. 		{
  13. 			for(k = j-i; k >= 0; k = k-i)
  14. 			{
  15. 				// If value at higher index is greater, then break the loop.
  16. 				if(a[k+i] >= a[k])
  17. 				break;
  18. 				// Switch the values otherwise.
  19. 				else
  20. 				{
  21. 					temp = a[k];
  22. 					a[k] = a[k+i];
  23. 					a[k+i] = temp;
  24. 				}
  25. 			}
  26. 		}
  27. 	}
  28. }
  29. int main()
  30. {	
  31. 	int n, i;
  32. 	cout<<"\nEnter the number of data element to be sorted: ";
  33. 	cin>>n;
  34.  
  35. 	int arr[n];
  36. 	for(i = 0; i < n; i++)
  37. 	{
  38. 		cout<<"Enter element "<<i+1<<": ";
  39. 		cin>>arr[i];
  40. 	}
  41.  
  42. 	ShellSort(arr, n);
  43.  
  44. 	// Printing the sorted data.
  45. 	cout<<"\nSorted Data ";
  46. 	for (i = 0; i < n; i++)
  47. 		cout<<"->"<<arr[i];
  48.  
  49. 	return 0;
  50. }
Success #stdin #stdout 0s 15240KB
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stdin
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Standard input is empty
stdout
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Enter the number of data element to be sorted: 
Sorted Data
https://ideone.com/WOY8M9
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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