
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Question
Given an Array A = <5,4,3,2,1> what will be the updated array A after we run some partition (A, 1 , 5)
some partition (a, p , r)
mid = (p + 2)/2
x = a[mid]
i = p - 1
j = r + 1
while (true)
do
j = j - 1
while (A[j] > x
do
i = i + 1
while (A[i] < x)
if (i < j)
swap A[i} and A[j}
else
return j
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