During each iteration of Quick Sort algorithm, the first element of array is selected as a pivot. The algorithm for Quick Sort is given below. Modify it in such a way that last element of array should be selected as a pivot at each iteration. Also explain the advantages.
During each iteration of Quick Sort algorithm, the first element of array is selected as a pivot. The algorithm for Quick Sort is given below. Modify it in such a way that last element of array should be selected as a pivot at each iteration. Also explain the advantages.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
Related questions
Question
During each iteration of Quick Sort
![Quick-Sort(A, left, right)
left 2 right
if
return
else
middle -
Partition (A, left, right)
Quick-Sort(A, left, middle-1 )
Quick-Sort(A, middle+1, right)
end if
Partition (A, left, right)
x - A[left]
i
left
for j - left+1 to right
if A[j] < x then
i - i + 1
swap (A[i], A[j])
end if
end for j
swap (A[i], A[left])
return i](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F911bedbb-3127-40a6-92e1-b691111bf99d%2Fba213f56-af28-49b7-b893-fe73d4654da4%2Fu9vf8bb_processed.png&w=3840&q=75)
Transcribed Image Text:Quick-Sort(A, left, right)
left 2 right
if
return
else
middle -
Partition (A, left, right)
Quick-Sort(A, left, middle-1 )
Quick-Sort(A, middle+1, right)
end if
Partition (A, left, right)
x - A[left]
i
left
for j - left+1 to right
if A[j] < x then
i - i + 1
swap (A[i], A[j])
end if
end for j
swap (A[i], A[left])
return i
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