Consider the following recursive algorithm for a tree. getInternalNodes (v, s) { if (v has at least one child) { s.push (v) } for each child of v // ***BLANK*** return s return s
Consider the following recursive algorithm for a tree. getInternalNodes (v, s) { if (v has at least one child) { s.push (v) } for each child of v // ***BLANK*** return s return s
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:Consider the following recursive algorithm for a tree.
get InternalNodes (v, s) {
if (v has at least one child) {
s.push (v)
for each child of v
***BLANK***
}
return s
return s
If we call get InternalNodes () and pass as input the root of a tree T as well
an empty stack, we expect to receive back a stack containing all the internal nodes
of the tree T.
Which of the following statements correctly completes the algorithm above?
S
getInternalNodes (child, s)
return getInternalNodes (child, s)
s.push (getInternalNodes (child, S))
get InternalNodes (child, s)
=
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