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  1.  
  2.  
  3. #include <iostream>
  4. using namespace std;
  5.  
  6. int main()
  7. {
  8. 	int a[] = { 5,10,7,6,3,9,4,8,12 };	
  9. 	int i = 0, j = 8;
  10. 	int k =  (i+j)/2;
  11. 	int mid = a[k];
  12. 	bool a1=false,a2=false;
  13. 	do
  14. 	{
  15. 	while (i<k) 
  16. 	{
  17. 		if (a[i] > mid) { a1 = true; break; }
  18. 		i++;
  19. 	}
  20. 	while (j>k) 
  21. 	{
  22. 		if (a[j] < mid) { a2 = true; break; }
  23. 		j--;
  24. 	}
  25. 	if (a1 && a2) 
  26. 	{
  27. 		int temp = a[i];
  28. 		a[i]=a[j];
  29. 		a[j] = temp;
  30. 		a1=false; 
  31. 		a2=false;
  32. 		i++;
  33. 		j--;
  34. 	}
  35. 	else if (!a1 && a2) 
  36. 	{
  37. 		a[k] = a[j];
  38. 		a[j]=mid;
  39. 		mid = a[k];
  40. 		a2=false;
  41. 		i = 0;
  42. 		j = 8;
  43. 	}
  44. 	else if (a1 && !a2) 
  45. 	{
  46. 		a[k] = a[i];
  47. 		a[i]=mid;
  48. 		mid = a[k];
  49. 		a1=false; 
  50. 		i = 0;
  51. 		j = 8;
  52. 	}
  53. 	else break;
  54. 	}while (1);
  55.  
  56. 	for (int i = 0; i<9; i++) cout << a[i] << " "; cout << endl;
  57.  
  58. 	return 0;
  59. }
Success #stdin #stdout 0s 3412KB
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Standard input is empty
stdout
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3 4 5 6 7 9 10 8 12
https://ideone.com/IjFIKV
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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