Data Structures and Algorithms Essentials You Always Wanted to Know

Chapter 1 - Introduction to Data Structures and Algorithms

1.1 - What are Data Structures?
1.2 - What Are Algorithms?
1.3 - Importance and Applications
Chapter Summary
Quiz

Chapter 2 - Complexity and Big O Notation

2.1 Analyzing Complexity
2.2 Big O, Omega, and Theta Notation: Worst, Best, and Average Cases
2.3 Trade-offs Between Recursion and Iteration
Chapter Summary
Quiz

Chapter 3 - Arrays

3.1 Introduction to Arrays
3.2 Array Operations
3.3 Array-Based Algorithms
3.4 Practical Application – Team Roster
Chapter Summary
Quiz

Chapter 4 - Stacks and Queues

4.1 Introduction to Stacks
4.2 Introduction to Queues
4.3 Using deque for Stacks and Queues
4.4 Stack and Queue-Based Algorithms
4.5 Practical Applications – Browser History and Print Queues
Chapter Summary
Quiz

Chapter 5 - Linked Lists

5.1 Introduction to Linked Lists
5.2 Types of Linked Lists
5.3 Linked List Operations
5.4 Linked List-Based Algorithms
5.5 Practical Application - Palindrome Checking
Chapter Summary
Quiz

Chapter 6 - Hash Tables

6.1 Introduction to Hashing
6.2 Probing Methods and Hash Functions
6.3 Implementing Hash Tables
6.4 Hash Table Based Algorithms
6.5 Practical Application - Caching
Chapter Summary
Quiz

Chapter 7 - Trees

7.1 Introduction to Trees
7.2 Binary Trees
7.3 - Binary Search Trees (BSTs)
7.4 - Tree-Based Algorithms
7.5 - Practical Application - File Systems
Chapter Summary
Quiz

Chapter 8 - Graphs

8.1 - Introduction to Graphs
8.2 - Types of Graphs
8.3 - Implementing Graphs
8.4 - Graph Based Algorithms
8.5 - Practical Application - Longest Influence Chain
Chapter Summary
Quiz

Chapter 9 - Dynamic Programming and Greedy Algorithms
9.1 Introduction to Dynamic Programming and Greedy Algorithms
9.2 - Greedy Algorithm Examples
9.3 - Memoization vs Tabulation in Dynamic Programming
9.4 - Dynamic Programming Examples
9.5 - Practical Application - Longest Influence Chain Revisited
Chapter Summary
Quiz

Case Studies and Real-World Problems
Case Study 1- Managing a Music Library

Bibliography
Glossary

Shawn Peters has 19 years of teaching experience, is certified in Python Programming Teaching from the College of the North Atlantic, and also specializes in JavaScript and Java.

Vibrant Publishers is focused on presenting the best texts for learning about technology and business as well as books for test preparation. Categories include programming, operating systems and other texts focused on IT. In addition, a series of books helps professionals in their own disciplines learn the business skills needed in their professional growth.

Vibrant Publishers has a standardized test preparation series covering the GMAT, GRE and SAT, providing ample study and practice material in a simple and well organized format, helping students get closer to their dream universities.

The Self-Learning Management Series is designed to help students, new managers, career switchers, and entrepreneurs learn essential management lessons and covers every aspect of business, from HR to Finance to Marketing to Operations across any and every industry. Each book includes basic fundamentals, important concepts, and standard and well-known principles as well as practical ways of application of the subject matter.

An excellent guide for learning the basics of data structures and algorithms with simple explanations and useful examples.
-- Pintu Kumar
Research Scholar,
IEOR, IIT Bombay

Packed with clear explanations of essential DSA concepts, this book is a must-have for anyone serious about mastering data structures and algorithms in Python.
-- Karthik Chandrakant
AI Leader; Head of Data Science & AI at Imarticus Learning; Ex-Amazon, Mu Sigma; TEDx Speaker, Author

Data Structures and Algorithms Essentials You Always Wanted to Know provides a clear, structured, and beginner-friendly introduction to core data structures and algorithms using Python. Each chapter balances theory, practical applications, and quizzes that reinforce learning, making it ideal for self-learners and early computer science and data science students. The inclusion of real-world examples, such as caching and file systems, helps bridge the gap between abstract concepts and hands-on coding. Since I opened the book, I couldn't close it. If you want to learn data structures concepts, this is the learning material for you.
-- Dr. Lawrence Decamora
Computer Science Instructor,
University of Santo Thomas

The book delivers a strong educational experience characterized by clarity, accuracy, and pedagogical effectiveness. It excels at introducing foundational computer science concepts to beginners while maintaining practical relevance through real world coding examples.
-- Aldo Baca
Senior Machine Learning Scientist

Shawn Peters’ book does a great job of explaining how data structures and algorithms are used with real life examples, making complex ideas easy to grasp. I especially loved the way he uses pie baking as a fun illustration—it turns a tricky concept into something clear and relatable. The language is simple, avoiding jargon, and the illustrations really help make the ideas stick. It’s inspiring to see how these skills can be applied in professional settings, linking everyday understanding to real-world problem-solving. Overall, it’s an engaging and practical read that makes learning data structure and algorithms both accessible and relevant to everyday and professional life.
-- Loo Yee NG
Solutions Architect, CTMG

Shawn Peters has created an excellent guide for anyone studying computer science or data science, whether at school, university, or learning independently. This book offers a comprehensive and accessible introduction to essential topics like data structures, arrays, Big O notation, stacks, queues, linked lists, hash tables, trees, graphs, and dynamic programming. With clear explanations, practical Python and pseudocode examples, and real-world applications, it’s a valuable resource for learners preparing for exams, interviews, or building a strong foundation in coding. A smart, well-structured read for students and aspiring developers alike.
-- Jonathan Gillespie
Computer Science & Business Teach

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