Java Linked Lists: Singly, Doubly, and Circular Implementations

Master singly, doubly, and circular linked lists in Java with clear text-based explanations and step-by-step code implementations designed for technical interviews.

4.5 (183) ⏱ 50 min 📚 11 lessons

About this course

Understanding how data is organized in memory is crucial for writing efficient software and passing technical interviews. Linked lists form the foundation of dynamic memory management and advanced data structures. This course guides you through the mechanics of linked lists using clear, written explanations and step-by-step Java implementations. You will transition from writing basic sequential code to building and manipulating custom, type-safe data structures from scratch. What you'll learn: - Understand the fundamental memory layout of nodes and pointers in dynamic memory. - Implement Singly, Doubly, and Circular Linked Lists from scratch using modern Java generics. - Apply core pointer manipulation techniques to insert, delete, and traverse nodes efficiently. - Analyze the time and space complexity of different linked list operations using Big O notation. - Solve common technical interview problems, such as reversing a list and detecting cycles, using written code walkthroughs. - Practice clean coding standards using modern Java features to write robust, bug-free data structures. The course starts with fundamental memory concepts and basic node structures before moving step-by-step through pointer operations, full implementations, and interview-focused algorithmic challenges. This course is designed for beginner programmers, computer science students, and self-taught developers who have a basic grasp of Java syntax and want to master foundational data structures. No prior knowledge of algorithms is required. Start reading today to build a strong foundation in computer science and algorithm design.

What you'll get

  • 📜 Certificate of completion
    Add it to your LinkedIn profile
  • 💬 Personal AI tutor
    Stuck on a lesson? Ask your built-in tutor anything, any time.
  • ♾️ Lifetime access
    Come back anytime, no expiry
  • 📱 Phone or computer
    Works anywhere, any device
  • 💸 30-day refund
    No questions asked
  • Short & focused
    50 min of practical content

Reviews (3)

Zara Mohammed NG Verified learner
★ 5 · 2025-10-21T14:13:56+00:00

Good introduction to the topic. The structure was logical, and most of the examples were relevant, though I wished for more depth in certain areas.

Daniel Kim KE Verified learner
★ 4 · 2025-08-06T12:14:56+00:00

It's a solid course. The structure is logical and most of the examples were helpful. Could use a few more real-world scenarios though.

Chloe Allen AU Verified learner
★ 4 · 2024-12-27T01:58:56+00:00

Overall a good learning experience. The structure made sense, and the examples were relevant, though I felt some topics could have been explored more thoroughly.

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What do I need to take this course? +

Just a phone or computer with internet. No installs, no special hardware.

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By card via Stripe, or with cryptocurrency. We do not store card details — Stripe handles them securely.

Can I get a refund? +

Yes — full refund within 30 days, no questions asked.

How long will I have access? +

Forever. Once you purchase, the course is yours to revisit anytime.

Will I get a certificate? +

Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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