Data Structures and Algorithms The Complete Masterclass - Linked List Complexities

The video tutorial provides a comprehensive overview of linked lists, focusing on four main operations: access, search, insert, and delete. Each operation is explained in detail, highlighting the complexities involved, such as O(N) for access and search, and O(1) or O(N) for insert and delete depending on the information available. The tutorial also covers different scenarios for insertion and deletion, including at the start, end, and middle of the list. The session concludes with a brief introduction to doubly linked lists, setting the stage for the next lecture.

What is the time complexity of accessing an element in a linked list?

• O(log N)

• O(N^2)

• O(N)

• O(1)

Why can't you directly access the third element in a linked list?

• Because elements are stored in contiguous memory locations

• Because the head node is always the last element

• Because elements are not stored in sequence

• Because the third element is always at the end

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

• O(N^2)

• O(log N)

• O(N)

• O(1)

In a linked list, what is the worst-case scenario for searching an element?

• The element is in the middle

• The element is not present

• The element is at the tail

• The element is at the head

What are the three possible cases for inserting an element in a linked list?

• Start, middle, end

• Head, tail, middle

• Beginning, center, end

• First, last, middle

What is the time complexity of inserting an element at the start of a linked list if the head is known?

• O(N^2)

• O(N)

• O(log N)

• O(1)

What is the time complexity of deleting an element from the start of a linked list if the head is known?

• O(1)

• O(N)

• O(log N)

• O(N^2)

When deleting an element from the middle of a linked list, what information is crucial?

• The node to be deleted and its next node

• The tail node

• The head node

• The node to be deleted and its previous node

What happens to a node in a linked list once it is deleted?

• It is removed from memory immediately

• It becomes a garbage value and is eventually removed

• It becomes the new tail

• It becomes the new head

What is the next topic after singly linked lists?

• Hash tables

• Binary trees

• Doubly linked lists

• Circular linked lists