Data Structures Algorithms in Java – SECRETS to Ace LeetCode (Udemy.com)
COMPLETE Beginner to Expert Guide to Ace Coding Interview THIS YEAR with DSA in Java EVEN WITH Zero Experience.
Created by: Prerak Mehta
Last updated October 2025
What you will learn
- Learn various Popular Data Structures and their Algorithms.
- Develop your Analytical skills on Data Structure and use then efficiently.
- Ace coding interviews given by some of the top tech companies
- Become a better developer by mastering computer science fundamentals
- Time and Space Complexity of Algorithms, Detailed Discussion of Logic to solve LEETCODE questions
- Code Implementation in Java
- Real Coding Interview Questions from Google, Meta, Amazon, Adobe, Microsoft etc.
- Learn Java from Scratch
How it compares
Against the other 231 rated Udemy courses in Java on CourseDuck:
- Rating4.3 out of 5higher than 26% of them
- Reviews132#205 of 232 by number of reviews
- Length40.3 hourslonger than 94% of them
- Last updatedOctober 2025more recently than 67% of them
Course Description
COMPLETE Beginner to Expert Guide to Ace Coding Interview THIS YEAR with Data Structures & Algorithms in Java EVEN WITH Zero Experience.
Did you know that According to the U.S. Bureau of Labor and Statistics, developers will see job growth of 27% by 2024?
The problem is that everyone you know (your friends, family, professors, co-workers, etc) are LYING to you and most don’t even know it!
They tell you to…
Graduate from a "prestigious" university with an overpriced degree (which holds less weight than ever before)…
It’s too difficult to code
It’s too late to learn
You are not meant to code
This sounds pretty depressing, doesn’t it?
Yet, most people would succumb to other people’s opinions and would live a low quality life.
If you want more out of life, there is a better way.
Let me introduce you to The Amazing Escape Plan.
In this comprehensive, 3-in-1 course, you are going to Learn Java from scratch, understand core fundamentals of programming, solving Easy, Medium and Hard Level LeetCode Problems. You'll learn everything that you need to know to Crack Coding Interview rounds in your dream company starting THIS YEAR through…
Basics - We learn about the fundamentals of Java. How it works, the architecture, code execution, every single step in detail. We also cover the installation of tools that are required to write code in Java. We run our first Java program from scratch, providing a hands on demo of every step. We cover input and output in Java, data types, type conversion and casting, debugging, control flow, loops, and also solve a few problems.
Arrays and ArrayLists - We dive deep into how it works, the memory management, input/output, multidimensional arrays, dynamic arrays, working with functions, and solve some questions.
Strings and String Builder - We look into how it works internally, various operations, memory management, and some examples!
Searching Algorithms - We cover Linear Search & Binary Search in-depth. We cover the working, complexity analysis, code, and solve some LeetCode and FAANGM questions to strengthen the concepts.
Sorting Algorithms - In the sorting algorithm series, we cover Bubble sort, Selection sort, Insertion sort, Cycle Sort, Merge Sort in depth. We look at how the algorithm works, the complexity analysis, optimization, and code.
Pattern Questions - We'll look at how you can solve any coding patterns question in a step by step manner, and what the thought process should be like.
Time & Space Complexity - We'll go from beginner to advanced with “Time and Space Complexity Analysis”. We'll cover in-depth explanations of Big-O, Big-Omega, Theta and other notations
Recursion & Backtracking - Covers an introduction to Backtracking, along with maze path problems. An important video for interviews covering complete theory + code + tips.
Object Oriented Programming - In this section you'll master OOP Concepts like never before. This Module contains 7 lectures crossing over 5 hrs!
Linked Lists - One of the most important data structures for coding interviews. Here we also build the Linked List from scratch and see how it works internally! This module is also full of interview questions from Google, Facebook, Amazon, Microsoft, Apple, Twitter and LinkedIn ranging from LeetCode Easy to Hard.
Stacks and Queues - One of the most important data structures for coding interviews. Here we also build the data structures from scratch and see how it works internally. Along with the dynamic implementations, circular queues, exception handling and more.
Trees - One of the most important data structures for coding interviews. Here we also build the data structures from scratch and see how it works internally. Along with the Binary Trees, Binary Search Trees and Solving LeetCode Problems.
30 DAY GUARANTEE: If this course doesn’t completely change the trajectory of your life, Udemy will refund your entire purchase within 30 days.
You have nothing to lose and so much to gain!
ADD TO CART now and get closer to a freer, happier life than ever before.
Instructor Details
- 4.3 Rating
132 Reviews
Prerak Mehta
About me
My first exposure to programming was when I was 14. Ever since my childhood, I always wanted to develop new video games.
As I tried to dig deep and self-explore game development, I started to realize that programming is more and more demanding.
During my learning years I realized that conventional teaching techniques taught to us were extremely tricky in nature making it very difficult even for me who was already into programming difficult. Most of the times, my co-learners could not even understand basic concepts of coding.
That’s when my grey cells went to overdrive and the idea sparked that I should create programming and development courses which would involve innovative teaching techniques.
The courses will dramatically improve the learner’s understanding, most difficult concepts with complete ease and fun to learn for all learners who are passionate about coding.
Trust me, coding and development knowledge is becoming mandatory in all fields and sectors.
I’m hopeful my courses will bring about a qualitative change in programming outlook and enthuse more and more learners to take up programming.
Cheers and happy learning!
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Reviews
By Dave Swift on 7/23/2024
This is a great course to get started preparing for SDE interview rounds. The instructor teaches the concepts first on digital whiteboard and practices on Leetcode solving questions asked in big tech companies.
By Sara H on 3/19/2024
The contents and scope of the course is extremely large to the point that it is virtually a semester worth of computer science knowledge. It is truly commendable that the instructor was able to jam pack such a large amount of information into a roughly 40 hour cours.
By Shivam Juyal on 11/18/2023
pl's don't spend money on this cource because he copy the whole from Kunal Kushwaha from youtube.
By avinash satyam on 8/17/2023
expected more In-depth explanations
By Penelopé Benjammin on 8/8/2023
Hands down the best DSA bootcamp on Udemy ♀️! Anyone who is bit hesitant to buy this course should at least go through the free tutorials, they are so so good that you will instantly want to get enrolled on this course. Thank you so much Prerak for making this class
By Gabriel on 7/23/2023
This course is the BEST for Data structures and Algorithms. I mean you explain it so well. Learning Java and Solving Leetcode problems has never been this easier. Thank you so much.
By Sreejith on 5/23/2023
The best dsa course I have ever come across in my life, right from the basics to the advanced journey was really smooth. The instructor is really skilled. Strongly recommend this course if you're an absolute beginner.
By Aman jha on 5/17/2023
Overall, the course provided a solid foundation in DSA concepts and was beneficial for my learning. However, there is one specific aspect that led to the deduction of 1 star. The positive aspects of the online learning experience include: Comprehensive content: The course covered a wide range of DSA topics, including data structures like arrays, linked lists, trees, and algorithms like sorting and searching. The content was presented in a structured manner, making it easy to follow and understand. Engaging presentations: The instructor used interactive presentations, visuals, and examples to explain complex concepts effectively. The materials were well-designed and engaging, making the learning experience enjoyable. Assignments and assessments: Regular assignments and quizzes were provided to reinforce the learning and assess the understanding of the topics covered. These activities allowed for practical application of the learned concepts. Supportive community: The online platform fostered an active community where students could ask questions, engage in discussions, and seek help from both instructors and fellow learners. The supportive environment was beneficial for clarifying doubts and sharing insights. However, one area where the course fell short was the lack of real-world application examples. While the theoretical concepts were covered extensively, there were limited opportunities to apply them to real-world scenarios. Practical examples and case studies would have enhanced the learning experience by illustrating how DSA concepts are used in actual software development projects. Despite this drawback, the overall quality of the DSA online course was commendable. The comprehensive content, engaging presentations, and supportive community contributed to a valuable learning experience. With the inclusion of more real-world application examples, the course could have earned a full 5-star rating
By Meetansh Jain on 11/24/2022
I'm currently in the process of expanding my programing knowledge and this course has helped me in more ways that I can list. It introduced me to a whole new world of data structures and algorithms and how they work.
By Pierre Laglow on 11/22/2022
Wasn't much into programming before this course, a friend of mine recommended this. At first, I was a bit "scared" to commit to programming but this course brought me to a whole new of computer science and programming.
Quality Score
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Overall Score : 86 / 100







