Linked List Mastery Challenge

What is a singly linked list?

• A singly linked list is a collection of elements stored in a matrix format.

• A singly linked list is a type of tree structure where each node has two children.

• A singly linked list is a linear data structure where each element points to the next, forming a chain.

• A singly linked list is a data structure that allows random access to elements.

How do you insert a node at the beginning of a singly linked list?

• Add the new node at the end of the list.

• Create a new node, set its next to the current head, and update the head to the new node.

• Delete the current head and set the new node as the head.

• Replace the current head with the new node without linking.

What is the time complexity of searching for an element in a singly linked list?

• O(1)

• O(log n)

• O(n^2)

• O(n)

Explain the structure of a doubly linked list.

• A doubly linked list consists of a single pointer to the next node only.

• A doubly linked list is a linear data structure with nodes containing only data fields.

• A doubly linked list is a circular structure with no pointers to previous nodes.

• A doubly linked list is a data structure made up of nodes, each containing a data field, a pointer to the next node, and a pointer to the previous node.

How do you delete a node from a doubly linked list?

• Only update the head pointer of the list.

• Copy the node's data to the previous node and delete it.

• Update pointers of adjacent nodes and free the node.

• Remove the node and leave pointers unchanged.

What are the advantages of using a doubly linked list over a singly linked list?

• Doubly linked lists allow bidirectional traversal, easier deletion of nodes, and more efficient algorithms requiring backward access.

• Doubly linked lists use less memory than singly linked lists.

• Singly linked lists allow for faster insertion at both ends.

• Doubly linked lists can only be traversed in one direction.

What is a circular linked list?

• A circular linked list is a data structure that only allows one-way traversal.

• A circular linked list is a linked list where the last node points to the first node, creating a circular structure.

• A circular linked list is a linked list where nodes are arranged in a straight line.

• A circular linked list is a type of array.

What are the benefits of using a circular linked list?

• Complex algorithm implementation

• Benefits include continuous traversal, efficient memory usage, and simplified algorithm implementation.

• Increased memory overhead

• Limited traversal capabilities

How does memory management differ between singly and doubly linked lists?

• Singly linked lists use two pointers per node, while doubly linked lists use one.

• Doubly linked lists require less memory per node than singly linked lists.

• Memory management is the same for both singly and doubly linked lists.

• Memory management in singly linked lists uses less memory per node than in doubly linked lists due to the number of pointers.

What is the purpose of a head pointer in a linked list?

• To point to the first node of the linked list.

• To store the last node of the linked list.

• To point to the middle node of the linked list.

• To keep track of the size of the linked list.