Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
4th Edition
ISBN: 9780134787961
Author: Tony Gaddis, Godfrey Muganda
Publisher: PEARSON
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Expert Solution & Answer
Chapter 19, Problem 2FTE
Explanation of Solution
Purpose of the given code:
The given code is used to displays all the elements in a list “myList”.
Given code:
/* Set a reference "ref" to the first node in the list "myList" */
Node ref = myList; //Line 1
/* This loop will perform up to the reference "ref" is equal to "null" */
while (ref.next != null) //Line 2
{
/* Display the first node in the "ref" */
System.out.print(ref.value + " "); //Line 3
/* Move on to the next node by assigning "ref" to the successor of the existing node */
ref = ref.next; //Line 4
}
Error in the given code:
- The error is present in “line 2”, in the “while” loop.
- This error causes a “NullPointerException” if the list is empty and also the code will fail to display the last value in a nonempty list.
- Therefore, user should replace “ref != null” in the place of “ref.next != null”...
Expert Solution & Answer
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Removing the first node in a linked chain follows the same proceedure as to remove a node on the interior of the list.
True
False
implement this method:
numOccurrencesRec(LNode node, int n, int key) – This method takes as parameters a reference to the head of a linked list, a position specified by n, and a key. It returns the number of occurrences of the key in the linked list beginning at the n-th node. If n = 0, it means you should search in the entire linked list. If n = 1, then you should skip the first node in the list.
In a doubly-linked list, each node contains ( ) pointer(s).
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Chapter 19 Solutions
Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)
Ch. 19.1 - Prob. 19.1CPCh. 19.1 - Prob. 19.2CPCh. 19.3 - Prob. 19.4CPCh. 19 - A list is a collection that _____. a. associates...Ch. 19 - Prob. 2MCCh. 19 - Prob. 3MCCh. 19 - Prob. 4MCCh. 19 - Prob. 5MCCh. 19 - Prob. 6MCCh. 19 - Prob. 7MC
Ch. 19 - Prob. 11TFCh. 19 - Prob. 12TFCh. 19 - Prob. 13TFCh. 19 - Prob. 14TFCh. 19 - Prob. 15TFCh. 19 - Prob. 16TFCh. 19 - Prob. 17TFCh. 19 - Prob. 18TFCh. 19 - Prob. 19TFCh. 19 - Prob. 20TFCh. 19 - Prob. 1FTECh. 19 - Prob. 2FTECh. 19 - Prob. 3FTECh. 19 - Prob. 4FTECh. 19 - Prob. 5FTECh. 19 - Prob. 1AWCh. 19 - Prob. 2AWCh. 19 - Prob. 3AWCh. 19 - Prob. 4AWCh. 19 - Prob. 3SACh. 19 - Prob. 4SACh. 19 - Prob. 5SACh. 19 - Consult the online Java documentation and...Ch. 19 - Prob. 1PCCh. 19 - Prob. 2PC
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- Write algorithms to Insert a new node before any node in a link list.arrow_forwardTo calculate the number of nodes in a circularly linked list with a head node that represents a list of positive integers, write a pseudo-code method. The head node stores the amount of nodes as a negative number.arrow_forwardShow what an empty linked list would look like after the following values are added: d, f, h, r, narrow_forward
- Write algorithms to Insert a new node before Nth node in a link list.arrow_forwardWrite an algorithm that returns the node that contains the largest data in a simply linked list.algorithm with their respective methods and classes, without using codesarrow_forwardApart from the main list in the list above, elements with the same value are also linked. According to this; a) Write the Generic Node class. b) Write the method that adds a new element to the end of the list.arrow_forward
- Apart from the main list in the list above, elements with the same value are also linked. According to this; a) Write the Generic Node class. b) Write the method that adds a new element to the end of the list. JAVA CODEarrow_forwardHead Node (Dummy Head) must be existed with a Doubly linked list ? T or F?arrow_forwardCode --- linked list, swap every two adjacent nodesand return its head. For example,Given 1->2->3->4, you should return the list as 2->1->4->3. Your algorithm should use only constant space.You may not modify the values in the list,only nodes itself can be changed."""class Node(object): def __init__(self, x): self.val = x.arrow_forward
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