From 0 to 1 Data Structures & Algorithms in Java - Linked List Problems

What is the primary focus of the initial discussion on linked lists?

• Graph theory applications

• Memory management in linked lists

• Common problems and basic operations

• Advanced algorithms for linked lists

What is the basic method to determine the size of a linked list?

• Binary search

• Using a recursive function

• Using a hash map

• Walking through the list and counting nodes

How can the efficiency of counting nodes in a linked list be improved?

• By maintaining a counter that updates with each addition or deletion

• By using a stack

• By implementing a queue

• By using a binary tree

What is the first step when adding a node to an empty linked list?

• Traverse to the end of the list

• Initialize the head to point to the new node

• Delete the head node

• Set the new node's next pointer to the head

What should be the next pointer of a newly added node at the end of a linked list?

• Point to itself

• Point to the previous node

• Point to the head

• Set to null

What is the key indicator of the last node in a linked list?

• It points back to the head

• Its next pointer is null

• It has a unique identifier

• It has the highest value

What operation is performed by the 'pop element' method in a linked list?

• Reverses the linked list

• Adds a new node at the end

• Removes and returns the first node

• Sorts the linked list

What happens to the head pointer when the first element is removed from a linked list?

• It is set to null

• It points to the next element

• It remains unchanged

• It points to the last element

Why is memory management easier in Java when removing elements from a linked list?

• Java uses a different data structure

• Java automatically sorts the list

• Java's garbage collection handles memory freeing

• Java does not allow memory allocation

What is the return value when attempting to pop an element from an empty linked list?

• The head node

• An error message

• A null value

• The last element