Which XXX should replace the missing statement in the following BSTReplaceChild algorithm? ESTReplaceChild (parent, currentChild, newChild) { if (parent--left != currentChild ss parent-right != currentChild) return false if (parent--left == currentChild) parent--left = newChild else parent-right = newChild XXX newChild-parent = parent return true O a.if (newChild != null) O b.if (newChild == null) Ocif (newChild < parent-left)
Which XXX should replace the missing statement in the following BSTReplaceChild algorithm? ESTReplaceChild (parent, currentChild, newChild) { if (parent--left != currentChild ss parent-right != currentChild) return false if (parent--left == currentChild) parent--left = newChild else parent-right = newChild XXX newChild-parent = parent return true O a.if (newChild != null) O b.if (newChild == null) Ocif (newChild < parent-left)
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
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Transcribed Image Text:Which XXX should replace the missing statement in the following BSTReplaceChild algorithm?
BSTReplaceChild (parent, currentChild, newChild) {
if (parent-left != currentChild &s parent-right != currentChild)
return false
if (parent-left -- currentChild)
parent-left = newChild
else
parent-right = newChild
XXX
newChild-parent
= parent
return true
}
O a.if (newChild != null)
O b.if (newChild == null)
Oc.if (newChild < parentleft)
O d.if (newChild > parent-right)
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