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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Plese Explain Q 5. Thank you.

Question 4)
Using reasoning similar to what we used for insertion sort in class, analyze the running
time of the selection sort algorithm from the first homework assignment.
selectionSort(arr)
for startOfUnsorted in 0 to arr.length
smallestInUnsorted = max value
indexOfSmallest = -1
for i in startOfUnsorted to arr.length
int current = arr[i]
if arr[i] <smallestInUnsorted
smallestInUnsorted = arr[i]
indexOfSmallest = i
swap arr[indexOfSmallest], arr [startOfUnsorted]
Question 5)
Why do all cases have the same runtime in selection sort?
cost
C₂
Cg
time
expand button
Transcribed Image Text:Question 4) Using reasoning similar to what we used for insertion sort in class, analyze the running time of the selection sort algorithm from the first homework assignment. selectionSort(arr) for startOfUnsorted in 0 to arr.length smallestInUnsorted = max value indexOfSmallest = -1 for i in startOfUnsorted to arr.length int current = arr[i] if arr[i] <smallestInUnsorted smallestInUnsorted = arr[i] indexOfSmallest = i swap arr[indexOfSmallest], arr [startOfUnsorted] Question 5) Why do all cases have the same runtime in selection sort? cost C₂ Cg time
Expert Solution
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Step 1: Introducing sorting

Sorting data structures refers to the process of arranging data in a specific format, or in ascending or descending order. The sorting process can be performed on various data structures such as tables, lists or files. Sorting is important because it helps optimize the efficiency of a data structure by placing elements in a specific order that facilitates data processing.

A variety of sorting algorithms are available, each with its own advantages and disadvantages, chosen based on factors such as the size of the data set, the nature of the input, and the required time complexity. Some common sorting algorithms include bubble sort, selection sort, insertion sort, quick sort, merge sort, bulk sort, and basic sort.

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