STARTING OUT WITH C++ MPL
9th Edition
ISBN: 9780136673989
Author: GADDIS
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Expert Solution & Answer
Chapter 17, Problem 1RQE
Program Description Answer
The “head pointer” points to the first node in a linked list.
Expert Solution & Answer
Explanation of Solution
Linked list:
Linked list is a linear and dynamic data structure which is used to organize data; it contains sequence of elements which are connected together in memory to form a chain. The every element of linked list is called as a node.
Head pointer:
The purpose of head pointer is to point the node of head node or first node in the linked list and it is also called as “list head”; if the head pointer points to a null value, then it is considered that the list is empty.
Graphical representation of head pointer:
The graphical representation of head pointer is as follows:
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
ASSUMING C LANGUAGE
True or False: You can have the data portion of a Linked List be a Struct containing a Linked List itself
A linked list can hold ______ nodes
10
100
1000
a number specified when the linked list is instantiated.
any number of
struct node{
int a;
struct node * nextptr;
};
Write two functions. One for inserting new values to a link list that uses the given node structure.
void insert(struct node **head, int value);
Second function is called to count the number of even numbers in the link list. It returns an integer that represents the number of even numbers.
int countEvenNumbers(struct node *head);
Write a C program that reads a number of integers from the user and insert those integers into a link list (use insert function). Later pass the head pointer of this link list to a function called countEvenNumbers. This function counts and returns the number of even numbers in the list. The returned value will be printed on the screen.
Note 1: Do not modify the function prototypes.
Sample Input1:
Sample Output1:
45 23 44 12 37 98 33 35 -1
3
Sample Input2:
Sample Output2:
11 33 44 21 22 99 123 122 124 77 -1
4
Chapter 17 Solutions
STARTING OUT WITH C++ MPL
Ch. 17.1 - Prob. 17.1CPCh. 17.1 - Prob. 17.2CPCh. 17.1 - Prob. 17.3CPCh. 17.1 - Prob. 17.4CPCh. 17.2 - Prob. 17.5CPCh. 17.2 - Prob. 17.6CPCh. 17.2 - Why does the insertNode function shown in this...Ch. 17.2 - Prob. 17.8CPCh. 17.2 - Prob. 17.9CPCh. 17.2 - Prob. 17.10CP
Ch. 17 - Prob. 1RQECh. 17 - Prob. 2RQECh. 17 - Prob. 3RQECh. 17 - Prob. 4RQECh. 17 - Prob. 5RQECh. 17 - Prob. 6RQECh. 17 - Prob. 7RQECh. 17 - Prob. 8RQECh. 17 - Prob. 9RQECh. 17 - Write a function void printSecond(ListNode ptr}...Ch. 17 - Write a function double lastValue(ListNode ptr)...Ch. 17 - Write a function ListNode removeFirst(ListNode...Ch. 17 - Prob. 13RQECh. 17 - Prob. 14RQECh. 17 - Prob. 15RQECh. 17 - Prob. 16RQECh. 17 - Prob. 17RQECh. 17 - Prob. 18RQECh. 17 - Prob. 1PCCh. 17 - Prob. 2PCCh. 17 - Prob. 3PCCh. 17 - Prob. 4PCCh. 17 - Prob. 5PCCh. 17 - Prob. 6PCCh. 17 - Prob. 7PCCh. 17 - Prob. 8PCCh. 17 - Prob. 10PCCh. 17 - Prob. 11PCCh. 17 - Prob. 12PCCh. 17 - Running Back Program 17-11 makes a person run from...Ch. 17 - Read , Sort , Merge Using the ListNode structure...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- In a Linked List, _____ are the “links that connect the data structure together.arrow_forwardWhen removing curNode from a doubly-linked list with at least 2 elements, the list's tail may be assigned with _____. Group of answer choices curNode curNode's predecessor curNode's successor nullarrow_forwardclass Node: def __init__(self, e, n): self.element = e self.next = n class LinkedList: def __init__(self, a): # Design the constructor based on data type of a. If 'a' is built in python list then # Creates a linked list using the values from the given array. head will refer # to the Node that contains the element from a[0] # Else Sets the value of head. head will refer # to the given LinkedList # Hint: Use the type() function to determine the data type of a self.head = None # To Do # Count the number of nodes in the list def countNode(self): # To Do # Print elements in the list def printList(self): # To Do # returns the reference of the Node at the given index. For invalid index return None. def nodeAt(self, idx): # To Doarrow_forward
- 1 Singly Linked List A linked list is a data structure where elements are connected to form a chain where each node points to the next one in the order. Exercise: Given the code of the Node struct, implement a singly linked list with the following functionalities: • addFront: add an integer key to the front of the list. • remove: deletes the smallest number larger than or equal the passed integer and returns the deleted value. If no number is found, returns -1. All cases must be handled. You can define any helper method as needed. #include #include #define INF INT_MAX // indicates infinity value using namespace std; struct Node int key; Node next; Node(int key) { this->key - key; this->next- NULL; }; class SinglyLinkedList public: SinglyLinkedList () head - NULL; void addFront (Node* node) 1 int remove(int val) { private: Node head; }; int main() { SinglyLinkedList sLL - neu SinglyLinkedList (); Node* nodel = new Node (5); Node node2 - neu Node (13); Node node3 - nev Node(7);…arrow_forwardCircular linked list is a form of the linked list data structure where all nodes are connected as in a circle, which means there is no NULL at the end. Circular lists are generally used in applications which needs to go around the list repeatedly. struct Node * insertTONull (struct Node *last, int data) // This function is only for empty list 11 5 15 struct Node insertStart (struct Node +last, int data) In this question, you are going to implement the insert functions of a circular linked list in C. The Node struct, print function and the main function with its output is given below: struct Node { int data; struct Node *next; }; struct Node insertEnd (struct Node *last, int data) void print(struct Node *tailNode) struct Node *p; if (tailNode -- NULL) struct Node * insertSubseq (struct Node *last, int data, int item) puts("Empty"); return; p - tailNode → next; do{ printf("%d ",p→data); p - p > next; while(p !- tailNode →next); void main(void) { struct Node *tailNode - NULL; tailNode -…arrow_forwardT/F: All Linked Lists must have head node.arrow_forward
- Multiple choice in data structures void doo(node<int>*root){ if(root !=0) { node<int>*p=root; while(root->next!=0) root=root->next; p->data=root->data; } What is this code do? a. swap the first item with the last item in the linked list b. set the first item in the linked list as the last item c. doesn't do anything because the root parameter is passed by value d. change the root item in the binary tree with the farthest leaf itemarrow_forward1) An appended node always becomes the of a linked list. O head O tail 2) Which statements append a node with data value 15 to numList? O Node nodeA = new Node (15); numlist.append(numlist, nodeA); O Node nodeA = new Node (15); numList.append(nodeA); O Node nodeA = new Node (15); nodeA. append(numlist); O Node nodeA = new Node(15); append (numlist, nodeA);arrow_forwardLab 19 Building a linked list Start this lab with the code listed below. The LinkedList class defines the rudiments of the code needed to build a linked list of Node objects. You will first complete the code for its addFirst method. This method is passed an object that is to be added to the beginning of the list. Write code that links the passed object to the list by completing the following tasks in order: 1. Create a new Node object. 2. Make the data variable in the new Node object reference the object that was passed to addFirst. 3. Make the next variable in the new Node object reference the object that is currently referenced in variable first. 4. Make variable first reference the new Node. Test your code by running the main method in the LinkedListRunner class below. Explain, step by step, why each of the above operations is necessary. Why are the string objects in the reverse order from the way they were added? public class LinkedList { private Node first; public LinkedList () {…arrow_forward
- Lab 19 Building a linked list Start this lab with the code listed below. The LinkedList class defines the rudiments of the code needed to build a linked list of Node objects. You will first complete the code for its addFirst method. This method is passed an object that is to be added to the beginning of the list. Write code that links the passed object to the list by completing the following tasks in order: 1. Create a new Node object. 2. Make the data variable in the new Node object reference the object that was passed to addELKEt, 3. Make the next variable in the new Node object reference the object that is currently referenced in variable first. 4, Make variable first reference the new Node. Test your code by running the main method in the LinkedLiatBunner class below. Explain, step by step, why each of the above operations is necessary. Why are the string objects in the reverse order from the way they were added? public class LinkedList private Node first; public LinkedList () {…arrow_forwardC++ Programming Language ::::::: Redo the same functions this time as nonmember functions please : NOTE: You can add only one function into the linked list class get_at_position which will return value of element at given position. 1) Insert before tail : Insert a value into a simply linked list, such that it's location will be before tail. So if a list contains {1, 2, 3}, insert before tail value 9 is called, the list will become {1, 2, 9, 3}. 2) Insert before value : Insert a value into a simply linked list, such that it's location will be before a particular value. So if a list contains {1, 2, 3}, insert before 2 value 9 is called, the list will become {1, 9, 2, 3}. 3)Count common elements : Count common values between two simply linked lists.So if a list1 contains {1, 2, 3, 4, 5}, and list2 contains {1, 3, 4, 6}, number of common elements is 3. 4) Check if sorted : Check if elements of simply linked lists are sorted in ascending order or not.So if a list contains {1, 3, 7, 8, 9}…arrow_forwardstruct remove_from_front_of_dll { // Function takes no parameters, removes the book at the front of a doubly // linked list, and returns nothing. void operator()(const Book& unused) { //// TO-DO (13) |||| // Write the lines of code to remove the book at the front of "my_dll", // // Remember, attempting to remove an element from an empty data structure is // a logic error. Include code to avoid that. ///// END-TO-DO (13) //// } std::list& my_dll; };arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Systems ArchitectureComputer ScienceISBN:9781305080195Author:Stephen D. BurdPublisher:Cengage Learning
C++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning
Systems Architecture
Computer Science
ISBN:9781305080195
Author:Stephen D. Burd
Publisher:Cengage Learning
C++ Programming: From Problem Analysis to Program...
Computer Science
ISBN:9781337102087
Author:D. S. Malik
Publisher:Cengage Learning