A Practical Introduction to Data Structures & Algorithms — PickAClass
4.0 (1) ⏱ 2h 36m 📚 26 lessons 🎧 Audio version

A Practical Introduction to Data Structures & Algorithms

Master core concepts like arrays, linked lists, and trees to write more efficient and organized code in Java.

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About this course

Struggling to write code that is not just correct, but also fast and scalable? Understanding how to properly structure your data and apply algorithms is the key to leveling up your programming skills from a hobbyist to a professional. This course provides a clear, text-based path to mastering the fundamental building blocks of computer science. You will move beyond basic syntax to understand how to choose the right structure for your data and the right algorithm for your problem, enabling you to write cleaner, faster, and more effective code. What you'll learn: - Understand the core principles of algorithmic complexity with Big O notation to analyze performance. - Implement fundamental linear data structures like arrays, linked lists, stacks, and queues from scratch. - Learn how hash tables work and when to use them for highly efficient data lookup and storage. - Master tree-based structures, including how to build, search, and traverse a Binary Search Tree (BST). - Practice classic sorting algorithms such as Selection Sort and Insertion Sort to grasp core problem-solving patterns. - Grasp the concept of recursion and how it can be applied to solve complex problems elegantly. - Apply all concepts through practical, written exercises and code snippets in Java. The course begins with the essentials of algorithmic analysis before guiding you through the implementation and common use cases of each major data structure. Every concept is broken down into clear, readable explanations and practical code examples. This course is designed for beginners. No prior experience with data structures or algorithms is required, though a basic familiarity with Java programming will be beneficial. Start building your foundational knowledge in computer science today.

What you'll get

  • 📜 Certificate of completion
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  • 💬 Personal AI tutor
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  • 🎧 Audio version included
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  • 📱 Phone or computer
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  • 💸 14-day refund
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  • Short & focused
    2h 36m of practical content

Certificate of completion

Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.

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Certificate of Mastery
This certifies that
Name Surname
has successfully demonstrated mastery of
A Practical Introduction to Data Structures & Algorithms
Skills demonstrated
Behavioral pattern analysis
Foundational
1.2 hrs
Decision-architecture frameworks
Proficient
1.4 hrs
A/B test design
Proficient
1.7 hrs
Behavioral copywriting
Advanced
1.9 hrs
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PickAClass — Name Surname
A Practical Introduction to Data Structures & Algorithms
Page 2 of 2
Performance detail
Coursework summary
Lessons completed 14 / 14
Practice questions 26 / 28
Assignments submitted 4 (avg 4.5 / 5)
Capstone project Reviewed — 4.6 / 5
Total practice 6.2 hrs
Performance benchmark
Cohort rank Top 12% of 1,625
Time to completion 11 days (median: 22)
Mastery score 91 / 100
Practice-question score 94%
Skill verification Verified Skill Path
Verify this credential
pickaclass.com/certificates/PCC-2026-X4F7-AP19
Issued under the academic standards of PickAClass. Skill levels reflect assessed performance against the course's competency rubric. This is an original credential of this platform.

Reviews (1)

Benjamin Bouchard CA Verified learner
★ 4 · August 6, 2026

This was a good introduction. The structure is logical, and it covers the basics effectively. Might be too introductory for advanced learners.

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

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Yes — full refund within 14 days, no questions asked.

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

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

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