📖About This Course

This course contains the use of artificial intelligence. Java DSA: LEETCODE Exercises — Linked Lists, Stacks & QueuesMaster core data structures and problem-solving patterns with hands-on Java practice.Prepare to crack high-paying technical interviews and level up your engineering skills with this targeted, problem-driven practice course. Built specifically for software engineers, computer science students, and tech professionals, this course focuses on the most high-yield linear data structures and foundational algorithmic principles asked by top-tier tech companies.Whether you are preparing for FAANG/MAANG coding rounds, competitive programming contests, or mid-to-senior developer assessments, this course bridges the gap between basic syntax and production-grade data structure manipulation. Every exercise includes a clear breakdown of the logic, robust Java implementations utilizing clean Object-Oriented Programming (OOP) principles, and deep dives into time and space efficiency.Unlike theoretical lectures, this course emphasizes learning by doing. You won't just memorize solutions—you will learn how to spot core pointer patterns, manipulate node memory efficiently, leverage implicit/explicit stacks, choose the right collections, and optimize trade-offs.What You'll LearnMaster LeetCode-style problems across linear data structures using clean, idiomatic Java.Identify key algorithmic patterns in pointer manipulation, fast/slow pointer mechanics, and monotonic stacks/queues.Write optimized, enterprise-ready code with rigorous Big-O time and space complexity analysis.Leverage the Java Collections Framework (JCF) effectively (e.g., LinkedList, ArrayDeque, Stack) while also building structures entirely from scratch.Think like an interviewer: Learn how to handle edge cases (null references, head/tail mutations, single-node lists, cycles) and explain your memory allocation clearly.Topics CoveredLinked ListsFoundations: Singly, Doubly, and Circular Linked Lists; Dummy Nodes; Memory Allocation.Classic Patterns: In-place Reversal, Fast & Slow Pointers (Floyd’s Cycle Detection), Intersection of Two Lists.Advanced Manipulations: Merging $K$ Sorted Lists, Palindrome Lists, Reordering, and Partitioning.StacksFoundations: LIFO Mechanics, Array-based vs. Node-based Stack Implementations, Java's ArrayDeque vs. Stack.Core Applications: Balanced Parentheses, Expression Evaluation (Infix/Postfix/Prefix), Function Call Stack simulation.Algorithmic Patterns: Monotonic Stack (Next Greater Element, Daily Temperatures, Largest Rectangle in Histogram), Min/Max Stack Design.Queues & DequesFoundations: FIFO Mechanics, Double-Ended Queues (Deques), Circular Queues.Core Applications: Breadth-First Search (BFS) building blocks, Task Scheduling, Buffering.Advanced Patterns: Monotonic Queue (Sliding Window Maximum), Priority Queues & Heap integration, Designing Bounded Queues.Course FeaturesTargeted LeetCode-Style Exercises: Curated, high-frequency questions drawn directly from modern tech interviews.Complete Java Implementations: OOP-friendly, cleanly structured code leveraging standard Java practices.Memory & Pointer Deep Dives: Clear explanations of reference passing, garbage collection behavior, and node allocation.Step-by-Step Walkthroughs: From naive brute-force approaches to fully optimized, production-grade solutions.Self-Paced & Practical: Designed for flexible, high-impact learning.Why Take This Course?Interviewing at top product-based companies requires flawless precision when managing references and memory flow. Linked Lists, Stacks, and Queues are the ultimate testing ground for your fundamental coding rigor—they form the backbone of memory management, operating system scheduling, parsing engines, and advanced graph algorithms.This course gives you the exact blueprint to master these core data structures in Java, build rock-solid problem-solving muscle memory, and approach technical coding rounds with complete confidence.Start coding, master core Java DSA, and land your dream tech role today!

Java DSA: LEETCODE Exercises — Linked Lists, Stacks & Queues - Free Udemy Course [100% Off]

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What You'll Learn in This Free Udemy Course

This comprehensive free online course on Udemy covers everything you need to become proficient in core data structures using Java. Whether you're a beginner or looking to advance your skills, this free Udemy course with certificate provides hands-on training and practical knowledge you can apply immediately.

Master Linked Lists, Stacks, and Queues through high-yield LeetCode exercises
Implement pointer patterns like Floyd's Cycle Detection and monotonic stacks/queues
Build enterprise-grade code with Big-O analysis and Java Collections Framework mastery
Simulate production scenarios like BFS, expression evaluation, and in-place list reversal
Debug edge cases (null references, cycles, memory allocation) like an interview expert

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Meet Your Instructor

Learn from Jitendra Suryavanshi, an experienced Java DSA educator with proven methodologies for technical interviews. His courses leverage real-world scenarios to build production-ready code while teaching memory management fundamentals. Thousands of students praise his step-by-step approach to complex pointer manipulations and algorithm design.

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With a proven 4.5/5 rating and 7 students already enrolled, this Udemy free course has proven its value. The course includes 50+ comprehensive lessons and 12 hours of video tutorials, all taught in English. What sets this free online course apart is its laser focus on high-frequency interview patterns with complete Java implementations. Upon completion, you'll receive a certificate to showcase on LinkedIn and your resume. Plus, with mobile access, you can learn anytime, anywhere—perfect for busy professionals. This Development course in the Web Development niche is regularly updated and includes lifetime access, meaning you can revisit materials whenever you need a refresher.

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Here's why this free certification course is an opportunity you can't afford to miss: 1. Master high-paying technical interview patterns asked by top tech companies 2. Build portfolio-ready code using OOP principles and clean Java practices 3. Access lifetime updates as new LeetCode problems are added 4. Optimize memory management through live debugging scenarios 5. Join exclusive community support for coding challenges

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Is this Udemy course really 100% free?

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This limited-time offer expires on August 13, 2026. After this date, the course returns to its regular $84.99 price. We highly recommend enrolling immediately to secure your free access. The coupon has limited redemptions available.

Will I receive a certificate for this free Udemy course?

Absolutely! Upon completing all course requirements, you'll receive an official Udemy certificate of completion. This certificate can be downloaded, shared on LinkedIn, and added to your resume to showcase your new skills to employers.

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Frequently Asked Questions

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Java DSA: LEETCODE Exercises — Linked Lists, Stacks & Queues

This course includes: