Create a list : The List Contains Challenge

The video tutorial introduces the concept of a LinkedList class, explaining its structure and basic methods. It covers the implementation of the prepend and toString methods, analyzing their time complexities. The tutorial also demonstrates how to determine the length of the list and introduces the isEmpty method. Finally, it distinguishes between the responsibilities of the LinkedList and ListNode classes and hints at future methods for handling list indexes.

What is the primary role of the LinkedList class?

• To manage the entire list of nodes

• To represent individual nodes

• To store data in a tree structure

• To handle database connections

What does the prepend method do in a linked list?

• Adds a node to the front of the list

• Removes a node from the front of the list

• Adds a node to the end of the list

• Removes a node from the end of the list

In the prepend method, what happens if the list is initially empty?

• The new node is added to the end

• The list remains unchanged

• The new node is assigned directly to the root

• The new node is ignored

What is the purpose of the toString method in a linked list?

• To sort the list

• To convert the list into a string representation

• To remove a node from the list

• To add a node to the list

What is the time complexity of the prepend method?

• O(n^2)

• O(1)

• O(log n)

• O(n)

How does the toString method iterate through the linked list?

• By using a for loop

• By using a while loop

• By using a map function

• By using a recursive function

What is the time complexity of the toString method?

• O(1)

• O(n)

• O(n^2)

• O(log n)

How can you determine the length of a linked list?

• By counting the nodes while iterating through the list

• By checking the root node

• By using a built-in length property

• By dividing the list into two halves

What does the isEmpty method check in a linked list?

• If the list contains duplicate nodes

• If the list is sorted

• If the root is null

• If the list has more than one node

What is the time complexity of the isEmpty method?

• O(n^2)

• O(n)

• O(log n)

• O(1)