Data Structures and Algorithms The Complete Masterclass - Linked Lists

The video tutorial introduces linked lists, a fundamental data structure, and compares them with arrays. It explains the representation of linked lists using nodes and pointers, and discusses the differences between singly and doubly linked lists. The tutorial also covers how linked lists are stored in memory and the implications for accessing elements.

Why are linked lists considered a fundamental data structure?

• They form the basis for more complex data structures.

• They are the simplest data structure.

• They are used in all programming languages.

• They are faster than arrays.

How do linked lists differ from arrays in terms of memory storage?

• Linked lists store values in a fixed sequence.

• Arrays use pointers to connect values.

• Arrays store values randomly.

• Linked lists store values non-sequentially.

What is a node in a linked list?

• A single value in the list.

• A structure that stores a value and a pointer to the next node.

• A pointer to the first element.

• A function to access elements.

What is the role of the 'head' in a linked list?

• It stores the last element.

• It points to the next element.

• It indicates the start of the list.

• It is used to delete elements.

In a singly linked list, how are elements connected?

• Each element points to the next one.

• Elements are not connected.

• Each element points to the previous one.

• Elements are connected in a circular manner.

What additional information does a doubly linked list store compared to a singly linked list?

• The size of the list.

• The index of each element.

• The address of the next node only.

• The address of both the next and previous nodes.

How does a doubly linked list allow traversal?

• Only in a circular manner.

• Both forward and backward.

• Only from the end to the start.

• Only from the start to the end.

What is a major advantage of linked lists over arrays in terms of memory?

• Linked lists require less memory.

• Linked lists can store elements at non-contiguous memory locations.

• Arrays can store elements at non-contiguous memory locations.

• Arrays require less memory.

Why might linked lists be more complex to implement than arrays?

• They cannot store large data.

• They are not supported by all programming languages.

• They need additional pointers for each element.

• They require more memory.

What is a potential drawback of using linked lists?

• They are always larger than arrays.

• They are not flexible in memory usage.

• They cannot store different data types.

• They are slower to access elements compared to arrays.