Design a Custom HashMap from Scratch โ€” WalkSelf
โฑ 2h 30m ๐Ÿ“š 25 lessons ๐ŸŽง Audio version

Design a Custom HashMap from Scratch

Master the foundational concepts of hash tables by implementing a fully functional HashMap with integer keys.

  • ๐Ÿ’ฌ AI instructor
    Ask about any lesson and get a clear answer instantly, anytime.
  • ๐Ÿ• Start anytime
    No schedules or deadlines โ€” learn at your own pace, whenever suits you.
  • ๐ŸŒ In English
    Lessons, tasks and certificate โ€” all fully in your language.

About this course

Efficient data storage is at the heart of robust software. To truly master programming, understanding how core data structures work internally is essential. This course guides you through the process of designing and implementing your own HashMap from first principles. By the end, you will possess a profound understanding of hash tables, their underlying mechanics, and how to build them yourself. What you'll learn: Understand the fundamental theory and applications of hash tables. Design and implement a custom HashMap with put, get, and remove functionality. Apply effective collision resolution strategies, including separate chaining. Analyze the time and space complexity of HashMap operations. Implement dynamic resizing to maintain optimal performance as data grows. Practice writing clean, modular, and testable data structure code. The course starts with the basic concepts of hashing and gradually builds up to a complete custom HashMap implementation. You will explore how to manage data, handle collisions, and ensure efficient performance through various design choices. This course is ideal for beginner developers, computer science students, or anyone eager to gain a deep, hands-on understanding of foundational data structures. No prior experience with custom data structure implementation is necessary. Begin your journey into mastering data structures and efficient programming.

What you'll get

  • ๐Ÿ“œ Certificate of completion
    Add it to your LinkedIn profile
  • ๐Ÿ’ฌ Personal AI tutor
    Stuck on a lesson? Ask your built-in tutor anything, any time.
  • ๐ŸŽง Audio version included
    Learn on the go โ€” no screen needed
  • โ™พ๏ธ Lifetime access
    Come back anytime, no expiry
  • ๐Ÿ“ฑ Phone or computer
    Works anywhere, any device
  • ๐Ÿ’ธ 14-day refund
    No questions asked
  • โšก Short & focused
    2h 30m of practical content

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Frequently asked

What do I need to take this course? +

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

How do I pay? +

By card via Stripe. We donโ€™t store card details โ€” Stripe handles them securely.

Can I get a refund? +

Yes โ€” full refund within 14 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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