Core Java Programming Course- Linked List

This video tutorial covers the basics of linked lists in Java, including how to create, add, search, update, and remove elements. It explains the similarities and differences between linked lists and arraylists, and introduces advanced methods like peek and poll for accessing the head and tail of the list. The tutorial also highlights the importance of understanding these operations for efficient data management.

What is a key difference between a linked list and an array list?

• Linked lists use pointers to connect elements.

• Array lists are always faster than linked lists.

• Array lists do not allow duplicate elements.

• Linked lists cannot store primitive data types.

How do you declare a linked list in Java 10?

• var list = new LinkedList();

• LinkedList list = new LinkedList<>();

• LinkedList list = new LinkedList();

• var list = new LinkedList();

Which method is used to add an element to a linked list?

• push()

• add()

• append()

• insert()

How can you update an element at a specific index in a linked list?

• Using the set() method

• Using the modify() method

• Using the update() method

• Using the change() method

What happens when you use the clear() method on a linked list?

• It removes elements based on a condition.

• It removes all elements.

• It removes the first element.

• It removes the last element.

Which method would you use to find the index of an element in a linked list?

• findIndex()

• search()

• locate()

• indexOf()

How can you check if a linked list contains a specific value?

• Using the has() method

• Using the exists() method

• Using the contains() method

• Using the includes() method

What does the peekFirst() method do in a linked list?

• Adds an element at the beginning

• Returns the last element without removing it

• Returns the first element without removing it

• Removes the first element

What is the difference between pollFirst() and peekFirst() methods?

• pollFirst() removes the first element, peekFirst() does not

• pollFirst() and peekFirst() both remove the first element

• pollFirst() adds an element, peekFirst() removes it

• pollFirst() does not exist in linked lists

Which method converts a linked list to an array?

• arrayify()

• convert()

• listToArray()

• toArray()