Linked List Complexities

The video tutorial covers the complexities of linked list operations, including access, search, insert, and delete. It explains how to traverse linked lists to access or search for elements, and discusses the complexities involved in these operations. The tutorial also details the methods for inserting and deleting elements at different positions in a linked list, highlighting the importance of having head and tail information for efficient operations. The session concludes with a brief introduction to doubly linked lists.

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

• O(N^2)

• O(log N)

• O(N)

• O(1)

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

• Because elements are not stored in contiguous memory locations

• Because we need to know the memory address

• Because the head node is always the last element

• Because elements are stored in sequence

What is the worst-case complexity of searching for an element in a linked list?

• O(1)

• O(N)

• O(N^2)

• O(log N)

In which scenario is the complexity of inserting an element in a linked list O(1)?

• When inserting at the start with head information

• When inserting in the middle without any information

• When inserting at the end with tail information

• When inserting at the end without tail information

What must be updated when inserting a new node at the start of a linked list?

• The head pointer

• The middle node's next pointer

• The tail pointer

• The last node's next pointer

What is the complexity of deleting the first element in a linked list?

• 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 tail node

• The memory address of the last node

• The node to be deleted and its previous node

• The head node

What happens to the memory of a deleted node in a linked list?

• It is moved to the end of the list

• It becomes a garbage value

• It is immediately reused

• It is stored in a temporary buffer

What is a key difference between singly and doubly linked lists?

• Doubly linked lists have nodes with two pointers

• Singly linked lists can only be traversed in one direction

• Doubly linked lists are faster for all operations

• Singly linked lists require more memory

What will be discussed in the next lecture following this one?

• Circular linked lists

• Doubly linked lists

• Binary trees

• Hash tables