Abstract Data Type Quiz: List, Stack, Queue, Trees

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Questions and Answers

What is the main characteristic of an Abstract Data Type (ADT)?

It only mentions what operations are to be performed, but not how these operations will be implemented. (correct)

It is not like a black box, as it reveals the inner structure and design of the data type.

It specifies the implementation details of the data organization and algorithms.

It restricts the user from knowing what a data type can do or how it will be implemented.

What does the term 'abstraction' refer to in the context of Abstract Data Types (ADT)?

Giving an implementation-independent view by providing only the essentials and hiding the details. (correct)

Implementing the details of the data organization.

Revealing the inner details of the data type.

Hiding the essential information about the data type.

Which of the following data types is NOT typically considered as an Abstract Data Type (ADT)?

Stack

List

Primitive values like int, float, char (correct)

Queue

What does an Abstract Data Type (ADT) look like according to its analogy as a 'black box'?

It hides the implementation details from the user. Signup and view all the answers

Which of the following is true about an Abstract Data Type (ADT)?

It gives an implementation-independent view by providing only essential information. Signup and view all the answers

What is the main purpose of Abstract Data Types (ADTs)?

To provide an implementation-independent view by hiding specific details. Signup and view all the answers

What is a linked list?

A linear data structure that includes a series of connected nodes Signup and view all the answers

What is the main difference between storing a list in arrays and using a linked list?

Arrays store elements in sequential memory locations, while linked lists use pointers or links to associate elements sequentially Signup and view all the answers

What is the special name given to the address of the first node in a linked list?

HEAD Signup and view all the answers

Which component is unique to a doubly linked list compared to a singly linked list?

*prev - address of the previous node Signup and view all the answers

How is a doubly linked list different from a singly linked list?

A doubly linked list allows traversal in both forward and backward directions, while a singly linked list only allows forward traversal Signup and view all the answers

What does the 'next' portion of the last node in a linked list point to?

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What type of data structure is a linked list?

A linear data structure that includes a series of connected nodes Signup and view all the answers

In a singly linked list, what does each node have besides the data item?

*next - address of the next node Signup and view all the answers

Which type of linked list allows traversal in both forward and backward directions?

*prev - address of the previous node Signup and view all the answers

What is used to associate elements sequentially in a linked list?

*next - address of the next node Signup and view all the answers

Study Notes

Abstract Data Types (ADT)

The main characteristic of an ADT is that it is a high-level description of a data structure that defines how the structure can be accessed and manipulated, without specifying how it will be implemented.
In the context of ADTs, 'abstraction' refers to the idea of showing only the necessary information to the outside world while hiding the internal details.

Excluded Data Type

Primitive data types, such as integers and characters, are not typically considered as Abstract Data Types (ADTs).

Analogy of ADT

An ADT can be thought of as a 'black box' that takes input, processes it, and produces output, without revealing how it performs the operations internally.

Characteristics of ADTs

An ADT is a self-contained module that provides a public interface for using the data structure, while keeping the implementation details private.

Purpose of ADTs

The main purpose of ADTs is to provide a way to define complex data structures in a modular and reusable manner.

Linked Lists

A linked list is a data structure in which a sequence of nodes are linked together through pointers.
The main difference between storing a list in arrays and using a linked list is that linked lists can dynamically allocate and deallocate memory as elements are added or removed.

Components of Linked Lists

The special name given to the address of the first node in a linked list is the 'head'.
In a singly linked list, each node has a data item and a pointer to the next node ('next' portion).
A doubly linked list is different from a singly linked list in that it allows traversal in both forward and backward directions, and has an additional pointer to the previous node ('prev' portion).
The 'next' portion of the last node in a linked list points to null or None.

Doubly Linked Lists

A doubly linked list allows traversal in both forward and backward directions due to the presence of 'next' and 'prev' pointers in each node.

Type of Data Structure

A linked list is a dynamic data structure.

Node Composition

In a singly linked list, each node has a data item and a pointer to the next node.

Type of Linked List

A doubly linked list allows traversal in both forward and backward directions.

Association in Linked Lists

Elements in a linked list are associated sequentially through pointers.

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Description

Test your knowledge about Abstract Data Types including List ADT, Stack ADT, Queue ADT, and Trees basic terminology. Explore concepts taught by Ashwini S Assistant Professor in the 'Data Structures with C++' class on 13-12-2023.