WorksheetsUnderstanding Linked Lists
Total questions: 10
Worksheet time: 5mins
What is a node in a linked list?
A node in a linked list is an element that contains data and a reference to the next node.
A node in a linked list is a graphical representation of a data point.
A node in a linked list is a fixed-size block of memory for storing strings.
A node in a linked list is a type of data structure that only stores integers.
What does the term 'null pointer' refer to?
A pointer that does not point to any valid memory location.
A pointer that is initialized to zero.
A pointer that points to a temporary variable.
A pointer that points to an invalid memory location.
How do you create a node in a singly linked list?
Use an array to store node data without pointers.
Create a node by linking it to the previous node only.
Define a node structure with data and a next pointer, then create an instance of this structure.
Instantiate a node with only a data field, ignoring pointers.
What is the process of traversing nodes in a linked list?
The process of traversing nodes in a linked list involves starting at the head, accessing each node's data, and moving to the next node until the end is reached.
The process of deleting nodes in a linked list requires identifying the node and removing it from memory.
The process of sorting nodes in a linked list involves rearranging them based on their values.
The process of merging two linked lists involves combining their nodes into a single list without traversal.
What is the difference between a singly linked list and a doubly linked list?
A singly linked list uses more memory than a doubly linked list due to its structure.
A singly linked list allows traversal in one direction, while a doubly linked list allows traversal in both directions.
A singly linked list can store multiple data types, while a doubly linked list can only store one type.
A singly linked list has a fixed size, while a doubly linked list can grow dynamically.
How can you prepend a node to a linked list?
Create a new node and link it to the last node in the list.
Insert the new node at the end of the list and update the tail.
Remove the current head and set the next node as the new head.
Create a new node, set its next to the current head, and update the head to the new node.
What does it mean for a linked list to be empty?
A linked list is empty when it has one node.
A linked list is empty when it has multiple nodes.
A linked list is empty when it has no nodes.
A linked list is empty when it has a head pointer.
What are the operations involved in searching for a node?
Traversal of the data structure, comparison of nodes, and possibly backtracking.
Iterating through elements, adding new nodes, and updating values.
Randomly selecting nodes, counting elements, and filtering results.
Sorting the data structure, merging nodes, and deleting duplicates.
How do you remove a node from a linked list?
Move the node to the end of the list.
Replace the node with a new one.
Delete the node directly from memory.
Update the previous node's next pointer to skip the node.
What is a circular linked list and how does it differ from a regular linked list?
A circular linked list has no end and loops infinitely, unlike a regular linked list.
A circular linked list connects the last node to the first node, while a regular linked list ends with a null reference.
A circular linked list is a type of array that can grow dynamically, unlike a regular linked list.
A circular linked list allows for multiple references to nodes, while a regular linked list does not.
