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Chapter 17: Problem 13

The __________ points to the first node in a linked list.

Short Answer

Expert verified
Answer: head

Step by step solution

01

Understanding Linked Lists

A linked list is a dynamic data structure in which each element (called a node) contains a data part and a reference (or link) to the next node in the sequence. Linked lists use pointers to keep track of the next element in the list. Traversal is done by following these pointers one after the other until the end of the list is reached.
02

First Node in a Linked List

The first node in a linked list is important because it serves as the entry point for accessing the rest of the list. It is the starting point from which we can traverse the list and access its elements. The term we are looking for that points to the first node is called the __head__.
03

Recap

In a linked list, the _______ points to the first node in a linked list. The term that fills the blank is called the __head__. The head is important as it serves as the starting point for traversing the list or accessing its elements.

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Most popular questions from this chapter

Name five basic linked list operations.

Find as many mistakes as you can. NumberList::~NumberList() { ListNode *nodePtr, *nextNode; nodePtr = head; while (nodePtr != nullptr) { nextNode = nodePtr->next; nodePtr->next = nullptr; nodePtr = nextNode; } }

\(\mathrm{T} \quad \mathrm{F} \quad\) Linked lists are not superior to STL vectors.

Find as many mistakes as you can. void NumberList::deleteNode(double num) { ListNode *nodePtr, *previousNode; // If the list is empty, do nothing. if (!head) return; // Determine if the first node is the one. if (head->value == num) delete head; else { // Initialize nodePtr to head of list. nodePtr = head; // Skip all nodes whose value member is // not equal to num. while (nodePtr->value != num) { previousNode = nodePtr; nodePtr = nodePtr->next; } // Link the previous node to the node after // nodePtr, then delete nodePtr. previousNode->next = nodePtr->next; delete nodePtr; } }

After creating a linked list’s head pointer, you should make sure it points to __________ before using it in any operations.
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