From 0 to 1 Data Structures & Algorithms in Java - The Linked List - The Most Basic Of All Data Structures

The video tutorial provides an in-depth look at linked lists, a fundamental data structure. It explains the basic concept of linked lists, their implementation in Java, and how they differ from array lists. The tutorial covers how to access elements in a linked list, the structure of a node, and the implementation of a linked list class in Java. It also discusses the memory layout of linked lists, how to traverse them, and the complexity of common operations using big O notation. Linked lists are highlighted as a common topic in programming interviews, especially in C, due to their complexity.

What is a key characteristic of a singly linked list?

• Each element points to the previous element.

• Elements are stored in a fixed size.

• Each element points to the next element.

• Elements are linked in both directions.

Why are linked lists not commonly implemented from scratch in Java?

• Java does not support linked lists.

• Linked lists are too complex to implement.

• Linked lists are not used in real-world applications.

• Java provides built-in libraries for linked lists.

What are the two main components of a linked list node?

• Data and a previous reference

• Data and a next reference

• Data and a size reference

• Data and a type reference

In Java, how is a node in a linked list typically implemented?

• As a primitive data type

• As a fixed array

• As a static method

• As a generic class

What is the purpose of the head in a linked list?

• To store the last element

• To point to the middle element

• To point to the first element

• To store the size of the list

How is the end of a linked list identified?

• The last element is a different data type

• The last element points to the head

• The last element points to null

• The last element has a special marker

What is the time complexity of adding an element to the end of a linked list?

• O(1)

• O(log n)

• O(n)

• O(n^2)

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

• O(n)

• O(log n)

• O(1)

• O(n^2)

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

• O(n)

• O(log n)

• O(1)

• O(n^2)

What is a potential optimization for adding elements to the end of a linked list?

• Using a fixed array

• Keeping a pointer to the last element

• Using a stack data structure

• Implementing a circular list