Essential Data Structures for Coding Interviews — PickAClass
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⏱ 3h 📚 30 lessons 🎧 Audio version

Essential Data Structures for Coding Interviews

Understand arrays, linked lists, stacks, queues, sets, and hash maps to approach technical interview problems with clarity and confidence.

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About this course

Solidifying your understanding of data structures is key to solving algorithmic challenges during software engineering technical interviews. This practical text-based course guides you through core data structures, teaching you how each works under the hood, when to use it, and how to analyze efficiency. What you will learn: Learn key terminology and memory concepts behind fundamental data structures. Understand how arrays, linked lists, and hash maps store and retrieve data efficiently. Apply stacks, queues, and sets to streamline common algorithmic patterns. Analyze time and space complexity using Big O notation for optimal code design. Practice evaluating algorithmic tradeoffs in technical interview scenarios. You will begin with core definitions and structural fundamentals before exploring step-by-step written explanations and practical code snippets. This course is ideal for early-career developers and job seekers looking for a clear, accessible foundation. Start reading today to sharpen your technical problem-solving skills.

Course contents

What you'll get

  • 📜 Certificate of completion
    Add it to your LinkedIn profile
  • 💬 Personal AI tutor
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  • 🎧 Audio version included
    Learn on the go — no screen needed
  • ♾️ Lifetime access
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  • 📱 Phone or computer
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  • 💸 14-day refund
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  • ⚡ Short & focused
    3h 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
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Name Surname
has successfully demonstrated mastery of
Essential Data Structures for Coding Interviews
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Behavioral pattern analysis
Foundational
1.2 hrs
✓
Decision-architecture frameworks
Proficient
1.4 hrs
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A/B test design
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1.7 hrs
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Behavioral copywriting
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1.9 hrs
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Essential Data Structures for Coding Interviews
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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
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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.

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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 don’t store card details — Stripe handles them securely.

Can I get a refund? +

Yes — 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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