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  1. //Diego Martinez					CSC5				    Chapter 8, P.487, #9
  2. /*******************************************************************************
  3. *  COMPARING SORTING ALGORITHM BENNCHMARKS
  4. * ______________________________________________________________________________
  5. * This program compares the performance  of the bubble sort and selection sort 
  6. * algorithms by sorting two identical arrays of 20 integers in ascending order.
  7. * 
  8. * Computation is based on the Formula:
  9. *	Comparing and exchanging array elements while sorting the numbers in 
  10. * ascending order using the Bubble Sort and Selection Sort algorithms. 
  11. *______________________________________________________________________________
  12. * INPUT
  13. *	A predefined array of 20 integer values stored in the program	
  14. *	no user input is required 
  15. * OUTPUT
  16. *	The total number of exchanges made by the Bubble Sort algorithm
  17. *	The total number of exchanges made by the Selection Sort algorithm 
  18. *******************************************************************************/
  19. #include <iostream>
  20. using namespace std;
  21.  
  22. 	// Function Prototypes
  23. 	void bubbleSort(int array[], int size, int &exchanges);
  24. 	void selectionSort(int array[], int size, int & exchanges);
  25.  
  26. int main()
  27. {
  28.  
  29. const int SIZE = 20;
  30.  
  31. // Original array
  32. int numbers[SIZE] = {
  33. 	45, 23, 67, 12, 89,
  34. 	34, 90, 11, 56, 78,
  35. 	2, 99, 41, 65, 18,
  36. 	73, 27, 50, 6, 81
  37. };
  38.  
  39. // Copy arrays
  40. int bubbleArray[SIZE];
  41. int selectionArray[SIZE];
  42.  
  43. // Copy values into both arrays
  44. for (int i = 0; i < SIZE; i++)
  45. {
  46. 	bubbleArray[i] = numbers[i];
  47. 	selectionArray[i] = numbers[i];
  48. }
  49. int bubbleExchanges = 0;
  50. int selectionExchanges = 0;
  51.  
  52. // Call Sorting Functions
  53. bubbleSort(bubbleArray, SIZE, bubbleExchanges);
  54. selectionSort(selectionArray, SIZE, selectionExchanges);
  55.  
  56. // Display results
  57. cout << "Bubble Sort Exchanges: " << bubbleExchanges << endl;
  58. cout << "Selection Sort Exchanges: " << selectionExchanges << endl;
  59.  
  60. return 0;
  61. }
  62. // Bubble Sort Function
  63. void bubbleSort(int array[], int size, int & exchanges)
  64. {
  65. 	int temp;
  66. 	for (int maxElement = size - 1; maxElement > 0; maxElement--)
  67. 	{
  68. 		for (int index = 0; index < maxElement; index++)
  69. 		{
  70. 			if (array[index] > array[index + 1])
  71. 			{
  72. 				temp = array [index];
  73. 				array[index] = array[index + 1];
  74. 				array[index + 1] = temp;
  75. 				exchanges++;
  76. 			}
  77. 		}
  78. 	}
  79. }
  80. // Selection Sort Function
  81. void selectionSort(int array[], int size, int & exchanges)
  82. {
  83. 	int minIndex, minValue;
  84. 	for (int start = 0; start < (size -1); start++)
  85. 	{
  86. 		minIndex = start;
  87. 		minValue = array[start];
  88.  
  89. 		for (int index = start +1; index < size; index++)
  90. 		{
  91. 			if (array[index] < minValue)
  92. 			{
  93. 				minValue = array[index];
  94. 				minIndex = index;
  95. 			}
  96. 		}
  97. 	if (minIndex != start)	
  98. 	{
  99. 		array[minIndex] = array[start];
  100. 		array[start] = minValue;
  101.  
  102. 		exchanges++;
  103. 	}
  104. 	}
  105. }
Success #stdin #stdout 0s 5312KB
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stdin
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Standard input is empty
stdout
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Bubble Sort Exchanges: 95
Selection Sort Exchanges: 17
https://ideone.com/nk5iND
COMPARING SORTING ALGORITHM BENNCHMARKS Ch. 8, P.487, #9
language:
C++ (gcc 8.3)
created:
2 hours ago
visibility:
public

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