Given the following program segment. Assume the node is in the usual info-link form with the info of the type int. (list and ptr are reference variable of the LinkedListNode type. What is the output of this program? list = new LinkedListNode (); list.info = 20; ptr = new LinkedListNode (); ptr.info = 28; ptr.link = null; list.link = ptr; ptr = list; list = new LinkedListNode (); list.info = 55; list.link = ptr; ptr = new LinkedListNode (); ptr.info = 30; ptr.link = list; list = ptr; ptr = new LinkedListNode (); ptr.info = 42; ptr.link= list.link; list.link = ptr; ptr = list; while (ptr!= null) { } System.out.println (ptr.info); ptr = ptr.link;

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
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Given the following program segment. Assume the node is in the usual info-link form
with the info of the type int. (list and ptr are reference variable of the
LinkedListNode type. What is the output of this program?
list = new LinkedListNode ();
list.info = 20;
ptr = new LinkedListNode ();
ptr.info = 28;
ptr.link= null;
list.link
ptr;
ptr = list;
list = new LinkedListNode ();
list.info = 55;
list.link = ptr;
ptr = new LinkedListNode ();
ptr.info = 30;
ptr.link= list;
list = ptr;
ptr = new LinkedListNode ();
ptr.info = 42;
ptr.link= list.link;
list.link= ptr;
ptr = list;
while (ptr!= null)
{
}
System.out.println (ptr.info);
ptr = ptr.link;
Transcribed Image Text:Given the following program segment. Assume the node is in the usual info-link form with the info of the type int. (list and ptr are reference variable of the LinkedListNode type. What is the output of this program? list = new LinkedListNode (); list.info = 20; ptr = new LinkedListNode (); ptr.info = 28; ptr.link= null; list.link ptr; ptr = list; list = new LinkedListNode (); list.info = 55; list.link = ptr; ptr = new LinkedListNode (); ptr.info = 30; ptr.link= list; list = ptr; ptr = new LinkedListNode (); ptr.info = 42; ptr.link= list.link; list.link= ptr; ptr = list; while (ptr!= null) { } System.out.println (ptr.info); ptr = ptr.link;
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