Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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In c++
Transcribed Image Text:Objectives - Apply Quick sort and Insertion sort algorithms
Write a program to sort an array of random elements using quicksort as follows:
1. Sort the arrays using pivot as the first element of the array
2. Sort the arrays using pivot as the median of the first, last, and middle elements of the array
3. Sort the arrays using pivot as the first element of the array. However,, when the size of any sub-list reduces to less than 20, sort the
sub-list using insertion sort.
4. Sort the array using pivot as the median of the first, last and middle elements of the array. When the size of any sub-list reduces to less
than 20, sort the sub-list using insertion sort.
5. Calculate and display the CPU time for each of the preceding four steps.
Example of the median of the first, last and middle elements:
123456780 (median of 1, 5,0 is 1)
801234567 (median of 8, 3, 7 is 7)
To calculate the CPU time, use the header <ctime>, and clock_t type. You need to cast the duration to float and divide it by
CLOCKS_PER_SEC. Depends on the CPU of your computer, your outputs would not be the same as in the sample output below.
Sample Output:
Enter array size: 100000
Quick sort time, with pivot as the first element: 0.039
Quick sort time, with pivot median element: 0.035
Quick sort and insertion sort time, with pivot as the first element: 0.034
Quick sort and insertion sort time, with pivot median element: 0.034
Would you like to enter another array size (y/n) y
Enter array size: 300000
Quick sort time, with pivot as the first element: 0.111
Quick sort time, with pivot median element: 0.108
Quick sort and insertion sort time, with pivot as the first element: 0.107
Quick sort and insertion sort time, with pivot median element: 0.108
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