Data Structures and Algorithms: Deep Dive Using Java

Learn about Arrays, Linked Lists, Trees, Hashtables, Stacks, Queues, Heaps, Sort algorithms and Search algorithms

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Tim Buchalka
(22,140 reviews)
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So you’ve worked with the basics of data structures and algorithms in Java (or another OO programming language) but feel like you need a deeper knowledge of how things work.

Maybe you have taken other courses on this topic that focus more on teaching how to pass job interview tests (theory) instead of how to make good choices for the programs you develop (implementation).

Or maybe you are ready to move from a junior programming position to a more senior one and need to get skilled in advanced concepts like data structures, and how to apply them to your own projects.

Whatever the reason, if you are looking for a course that focus on the implementations to give you a complete understanding of how things work, then this is the course for you.

This course goes over the theory of how things work, but only to give you what you need to know to understand the implementation covered. 

Complete source code is included and available for you to download.

This is a hands-on course!  If you want to try understand things at a deep level, and work on implementations, rather than theory, then again, this is the course for you.

Topics covered:-

Arrays
Linked Lists
Trees
Hashtables
Stacks
Queues
Heaps
Sort algorithms
Search algorithms

The course also spends more time than most other courses of its kind looking at what’s available in the JDK. Students wanting to understand how things work “under the hood” will benefit enormously from this course.

Why learn about data structures and algorithms?

The reality is, the more you learn about data structures and algorithms, the better a programmer you become.

Why?

Because, data structures and algorithms are effectively patterns for solving problems.   You want to add as many of them as you can to your skill-set.  By doing so, you will find you solve more problems, and use the right tools for the job, in a more elegant way.  And you will learn a heap of them in this course.

Why enrolling in this course is the best decision you can make.

Your instructor, Sarah Ettritch has over 25 years’ software development experience and has been working with Java since JDK 1.1.  She has spent many years creating tools used by developers, which required a deep knowledge of data structures and algorithms, and is perfectly qualified to teach this course.

Most courses focus on giving you the theory of how things work, so that you can take an interview.  Whilst the theory is important, the knowledge of how to implement these data structures and algorithms are of vital importance.

This course goes over the theory of how things work, but only to give you what you need to know to understand the implementation covered.   The main focus of the course is to give you a real understanding of how things work under the hood, so that you can apply this to future programming projects.

If you want to actually understand how things work, and be able to take that understanding and apply it to your own programs, then this course is for you.

After completing this course, you will have a solid understanding of data structures and algorithms (both the theory, and the implementation).

The sooner you sign up for this course, the sooner you will have the skills and knowledge you need to increase your job or consulting opportunities.    Java developers with key skills and understanding of data structures and algorithms are in high demand and get paid extremely well.

If you are ready for that new job promotion or consulting opportunity, it’s time to get started.

Why not get started today?

 Click the Signup button to sign up for the course

Requirements

  • Previous experience with an object-oriented programming language, preferably Java (but any OO language is fine).

What you will learn

  • Learn the strengths and weaknesses of a variety of data structures, so you can choose the best data structure for your data and applications
  • Code an implementation of each data structure, so you understand how they work under the covers
  • Learn many of the algorithms commonly used to sort data, so your applications will perform efficiently when sorting large datasets
  • Learn what’s available in the JDK for storing and sorting data, so you won’t waste time reinventing the wheel

Who should attend

  • Developers who have some knowledge of Java (or another OO language) looking to understand data structures and algorithms at a deep level

Is available on google app?

Yes

Is available on ios?

Yes

Course Features

  • Lectures 118
  • Quizzes 0
  • Exercises 0
  • Duration 16 total hours
  • Skill level Intermediate Level
  • Students 117887
  • Last Updated June, 2025

  • Introduction 56:33

    • Lecture
      Course Introduction and Updates by Tim Buchalka 01:56
    • Lecture
      Data Structures and Algorithms: Course Overview 03:42
    • Lecture
      IntelliJ Ultimate Edition: 6-Month Free Trial Instructions 01:29
    • Lecture
      JDK 8 Installation Guide for Windows Users 05:15
    • Lecture
      JDK 8 Installation Guide for macOS Users 02:44
    • Lecture
      JDK 8 Installation Guide for Linux (Ubuntu) 04:20
    • Lecture
      IntelliJ IDEA Installation Guide for Windows 09:54
    • Lecture
      IntelliJ IDEA Installation Guide for macOS 09:43
    • Lecture
      IntelliJ IDEA Installation Guide for Linux (Ubuntu) 10:22
    • Lecture
      Understanding Data Structures: An Introduction 02:53
    • Lecture
      Understanding Algorithms: An Introduction 04:15

  • Arrays and Big-O Notation 43:42

    • Lecture
      Arrays: A Data Structure Introduction 00:53
    • Lecture
      Java Arrays: A Quick Review and Refresher 07:42
    • Lecture
      Big-O Notation: Understanding Time Complexity 14:09
    • Lecture
      Arrays in Memory: Storage and Access 09:02
    • Lecture
      Array Operations: Big-O Time Complexity 11:56

  • Sort Algorithms Deep Dive 04:15:41

    • Lecture
      Introduction to Sorting Algorithms 01:04
    • Lecture
      Bubble Sort Explained: Theory and In-Place Sorting 08:50
    • Lecture
      Bubble Sort Implementation in Java: Step-by-Step Guide 11:34
    • Lecture
      Stable vs. Unstable Sorting Algorithms Explained 04:42
    • Lecture
      Selection Sort: In-Place Sorting Algorithm Explained 06:33
    • Lecture
      Selection Sort Implementation in Java: A Practical Guide 05:02
    • Lecture
      Insertion Sort: Theory and Step-by-Step Explanation 07:34
    • Lecture
      Insertion Sort: Theory and Step-by-Step Explanation 07:12
    • Lecture
      Shell Sort: An Efficient Sorting Algorithm Explained 12:54
    • Lecture
      Shell Sort Implementation in Java: A Step-by-Step Guide 10:49
    • Lecture
      Recursion Explained: A Deep Dive into Recursive Methods 18:10
    • Lecture
      Merge Sort: Divide and Conquer Sorting Algorithm Explained 20:40
    • Lecture
      Merge Sort Implementation in Java: A Practical Guide 28:09
    • Lecture
      Quick Sort: Divide and Conquer Sorting Algorithm 08:58
    • Lecture
      Quick Sort Implementation in Java: A Practical Guide 12:34
    • Lecture
      Counting Sort: Linear Time Sorting Algorithm Explained 07:56
    • Lecture
      Counting Sort Implementation in Java: A Step-by-Step Guide 08:35
    • Lecture
      Radix Sort: Sorting Algorithm for Fixed Width Data 11:12
    • Lecture
      Stable Counting Sort: Theory and Implementation 13:18
    • Lecture
      Radix Sort Implementation in Java: A Practical Guide 14:05
    • Lecture
      Sorting Arrays in Java: Using the Arrays Class 07:00
    • Lecture
      Merge Sort Challenge: Descending Order Sorting 01:11
    • Lecture
      Merge Sort Challenge Solution: Descending Order 04:03
    • Lecture
      Insertion Sort Challenge: Recursive Implementation 00:49
    • Lecture
      Insertion Sort Challenge Solution: Recursive Implementation 11:46
    • Lecture
      Radix Sort Challenge: String Sorting Implementation 01:12
    • Lecture
      Radix Sort Challenge Solution: String Sorting 09:49

  • Mastering Lists in Java: Implementations and Applications 02:05:05

    • Lecture
      Introduction to Lists in Java: Exploring the java.util.List Interface 02:49
    • Lecture
      Understanding Abstract Data Types (ADTs): Definitions and Core Concepts 02:56
    • Lecture
      Deep Dive into ArrayLists: Capacity, Size, and Dynamic Array Implementation 23:56
    • Lecture
      Vectors in Java: Thread-Safe Operations and Synchronization vs. ArrayList 06:48
    • Lecture
      Singly Linked Lists: Conceptual Overview and Node-Based Data Organization 06:42
    • Lecture
      Implementing a Singly Linked List in Java: Node Creation and List Operations 17:39
    • Lecture
      Doubly Linked Lists: Theory, Bidirectional Traversal, and Node Relationships 09:33
    • Lecture
      Implementing a Doubly Linked List in Java: Enhancing Node Connections 21:47
    • Lecture
      JDK LinkedList Class: Exploring Java's Built-in Doubly Linked List Features 12:34
    • Lecture
      Linked Lists Coding Challenge 1: Adding Before a Node in a Linked List 01:36
    • Lecture
      Linked List Challenge 1 Solution Implementing Add Before in a Doubly Linked List 09:29
    • Lecture
      Linked Lists Coding Challenge 2: Sorted Insertion into a Singly Linked List 01:46
    • Lecture
      Linked List Challenge 2 Solution: Maintaining Sorted Order 07:30

  • Stack Data Structures: Implementation and Use Cases 48:57

    • Lecture
      Introduction to Stacks: Fundamental Concepts and Applications 00:37
    • Lecture
      Stack Operations and Principles: Understanding LIFO (Last-In, First-Out) 07:22
    • Lecture
      Implementing Stacks with Arrays: Array-Backed Stack Data Structures 18:31
    • Lecture
      Using JDK's LinkedList for Stacks: Leveraging Built-in Java Functionality 11:59
    • Lecture
      Stack Challenge: Develop a Palindrome Checker Using Stack Operations 02:03
    • Lecture
      Palindrome Checker Using Stacks: A Step-by-Step Solution and Code Walkthrough 08:25

  • Mastering Queue Data Structures: Implementation and Applications in Java 01:13:54

    • Lecture
      Queue Data Structures: Introduction and Core Concepts for Beginners in Java 00:26
    • Lecture
      Queue Fundamentals: FIFO Operations, Theory, and Time Complexity Analysis 03:38
    • Lecture
      Implementing Queues with Arrays: A Practical Java Coding Guide with Resizing 15:49
    • Lecture
      Enhancing Queues with Circular Arrays: Optimizing Space and Efficiency - Part 1 14:21
    • Lecture
      Advanced Circular Queue Implementation: Resizing, Unwrapping, and Optimization 20:30
    • Lecture
      Exploring Queue and Deque Interfaces in the Java Development Kit (JDK) 08:20
    • Lecture
      Coding Challenge: Test Palindrome Recognition Skills Using a Queue and a Stack 01:58
    • Lecture
      Palindrome Checker: Solution Using Stack and Queue in Java Detailed Walkthrough 08:52

  • Hash Tables: Mastering Key-Value Data Structures for Efficient Data Retrieval 02:12:36

    • Lecture
      Introduction to Hash Tables: Key-Value Pairs, and Advantages in Data Access 00:23
    • Lecture
      Hash Table Fundamentals: Hashing, Keys, Values, Load Factor and Collisions 08:25
    • Lecture
      Implementing Hash Tables with Arrays: A Practical Java Coding Guide 13:53
    • Lecture
      Collision Resolution in Hash Tables with Linear Probing and Rehasing Techniques 21:14
    • Lecture
      Implementing the Remove Method when Using Linear Probing in Hash Tables 09:39
    • Lecture
      Rehashing After Removing with Linear Probing for Improved Hash Table Performance 11:03
    • Lecture
      Handling Hash Table Collisions with Chaining: A Linked List Approach 21:24
    • Lecture
      Exploring HashMap, Hashtable, and LinkedHashMap in the Java Development Kit 16:52
    • Lecture
      Bucket Sort Algorithm Explained: Understanding the Theory and Implementation 06:35
    • Lecture
      Implementing the Bucket Sort Algorithm in Java: A Step-by-Step Code Example 09:03
    • Lecture
      Hashtables Challenge #1: Develop a Hashing Function for Integer Array Mapping 01:54
    • Lecture
      Hashing Function Challenge Solution: Creating an Integer to Array Index Mapper 02:39
    • Lecture
      Hashtables Challenge #2: Removing Duplicates from a LinkedList Using a HashMap 01:37
    • Lecture
      Hash Table Challenge #2 Solution: Eliminate Duplicates in a LinkedList Expertly 07:55

  • Optimized Search Algorithms in Java: Linear and Binary Search 25:50

    • Lecture
      Introduction to Searching Algorithms: Arrays and Basic Concepts 00:50
    • Lecture
      Implementing Linear Search: Step-by-Step Java Code and Time Complexity 03:51
    • Lecture
      Implementing Linear Search: Step-by-Step Java Code and Time Complexity 07:57
    • Lecture
      Binary Search Java Implementation: Iterative and Recursive Approaches 13:12

  • Mastering Tree Data Structures: Implementation and Optimization in Java 01:46:14

    • Lecture
      A Comprehensive Introduction to Tree Data Structures in Java 00:55
    • Lecture
      Fundamental Theory and Terminology of Tree Data Structures in Java 11:16
    • Lecture
      Deep Dive into Binary Search Trees: Characteristics and Theory 14:17
    • Lecture
      Implementing Insertion Operations in Binary Search Trees with Java 10:50
    • Lecture
      Mastering Tree Traversal Techniques: In-Order, Pre-Order and Post-Order 11:24
    • Lecture
      Implementing Get, Min, and Max Operations on Binary Search Trees 10:28
    • Lecture
      Binary Search Tree Deletion: Handling Cases with Zero or One Child 03:15
    • Lecture
      Implementing Node Deletion in Binary Search Trees: Zero and One Child 09:11
    • Lecture
      Mastering Binary Search Tree Deletion: Handling Nodes with Two Children 08:51
    • Lecture
      Implementing Deletion of Nodes with Two Children in Binary Search Trees 07:16
    • Lecture
      Exploring Tree-Related Classes and Structures within the Java JDK 03:44
    • Lecture
      Challenge Exercise: Implementing Pre-Order Traversal in Binary Trees 01:53
    • Lecture
      Bonus - Please Watch! 00:48
    • Lecture
      Solution and Explanation for Pre-Order Traversal in Binary Trees 02:49
    • Lecture
      Hands-On Practice: Insertion and Deletion Operations in Binary Trees 09:17

  • Mastering Heaps: Priority Queues and Heapsort Algorithm in Java 01:21:46

    • Lecture
      Comprehensive Introduction to Heap Data Structures in Java 00:29
    • Lecture
      Understanding the Underlying Theory and Properties of Heaps 07:50
    • Lecture
      Efficiently Storing and Representing Heaps as Arrays in Java 07:54
    • Lecture
      Implementing Insertion Operations in Max-Heaps Using Java 09:02
    • Lecture
      Theory and Concepts of Deletion Operations in Heap Data Structures 06:55
    • Lecture
      Implementing Deletion in Heaps: Handling All Cases with Java Code 20:06
    • Lecture
      Implementing the Peek Operation for Efficient Heap Data Access 05:19
    • Lecture
      Priority Queues: Understanding and Utilizing Heap-Based Implementations 12:00
    • Lecture
      Heapsort Algorithm Explained: In-Place Sorting with Max-Heaps (Theory) 04:54
    • Lecture
      Implementing the Heapsort Algorithm in Java: A Step-by-Step Guide 07:17

  • Final Section: Concluding the Course with Key Takeaways and Sets 04:28

    • Lecture
      Understanding and Utilizing Sets: A Comprehensive Overview in Java 02:51
    • Lecture
      Comprehensive Course Summary: Recap of Data Structures and Algorithms 01:24
    • Lecture
      Enhance This Course: Provide Feedback to Shape Future Content Updates! 00:13

  • Extra Information - Source code, and other stuff 07:29

    • Lecture
      Checkout my other 42 Udemy courses 00:35
    • Lecture
      Source Codes 02:00
    • Lecture
      Bonus Lecture and Information 04:49
    • Lecture
      Course Slides 00:05
Tim Buchalka
Java Python Android and C# Expert Developer - 1.23M students Tim's been a professional software developer for close to 40 years. During his career, he has worked for major companies such as Fujitsu, Mitsubishi, and Saab. His video courses are… View Profile
Goran Lochert
Software Engineer | Unity Certified Expert Programmer I’ve been a software developer for over 14 years (12 commercially), creating Desktop, Web, and Mobile applications during this time. I am a fully certified Java Developer (Java Oracle Certificate… View Profile
Tim Buchalka's Learn Programming Academy
Professional Programmers and Teachers - 323,000+ students The Learn Programming Academy was created by Tim Buchalka, a software developer with 35 years experience, who is also an instructor on Udemy, with over 335,000 students in his courses… View Profile

Student Feedback

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22,140 Average ratings
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  • 2 weeks ago

    Harikrishnan Cheerakkatt Illam Narayanan Nampoothiri

    revisited bigO notation.

  • 2 weeks ago

    Valdemar_dev

    Didática impecável

  • 1 month ago

    Khawaja Shaz Ahmad

    It was good.

  • 1 month ago

    Jolly Arnold

    A perfect match

  • 1 month ago

    M RUDRA TEJA

    explanation of topics is easy to understand

  • 1 month ago

    Mayuri - Ext Varshney

    yes

  • 1 month ago

    Adil - Ext Ahmad

    It Was Quite Nice.

  • 2 months ago

    Tulansh Chauhan

    Good

  • 2 months ago

    Priyank Gupta

    Great course, very illustrative

  • 3 months ago

    Gopinath Dhara

    Good and helpful

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