Coding Interview Foundations: Data Structures and Algorithms — WalkSelf

Coding Interview Foundations: Data Structures and Algorithms

Prepare for technical interviews by understanding essential data structures and practicing common algorithm patterns through clear written examples.

⏱ 30 min 📚 7 lessons 🎧 Audio version

About this course

Technical interviews can feel overwhelming when you are not sure how to approach complex coding problems. This course breaks down essential data structures and algorithms into manageable, text-based lessons, helping you build the problem-solving skills needed to confidently tackle technical assessments. You will start with foundational definitions, explore modern coding patterns, and apply your knowledge through extensive written exercises. What you will learn: * Understand foundational data structures like arrays, linked lists, hash maps, and trees. * Apply fundamental algorithm patterns such as sliding window, two pointers, and binary search. * Practice evaluating time and space complexity using Big O notation. * Learn how to write clean, type-hinted code solutions that meet modern industry standards. * Build confidence by working through step-by-step written walkthroughs of common interview questions. The course flows from basic concepts and key terminology into practical problem-solving strategies, ensuring a solid grasp of theory before moving to implementation. You will read detailed explanations and analyze code snippets designed to reinforce your understanding. Designed specifically for beginners, this foundational guide requires no prior computer science degree or advanced programming knowledge. Start reading today to sharpen your analytical skills and prepare for your next technical interview.

What you'll get

  • 📜 Certificate of completion
    Add it to your LinkedIn profile
  • 🎧 Audio version included
    Learn on the go — no screen needed
  • ♾️ Lifetime access
    Come back anytime, no expiry
  • 📱 Phone or computer
    Works anywhere, any device
  • 💸 14-day refund
    No questions asked
  • Short & focused
    30 min of practical content

Reviews (2)

Екатерина Попова BY Verified learner
★ 5 · 2026-04-12T15:08:01+00:00

Готовился к техническим собеседованиям и этот курс реально вправил мне мозги по структурам данных. Объяснения хеш-таблиц, деревьев и графов поданы очень доступно, с понятными письменными примерами. Особенно зашли разборы паттернов вроде двух указателей и скользящего окна, после них задачи стали щёлкаться куда легче. Раздел про сложность алгоритмов наконец-то разложил мне всё по полочкам. Каждая тема сопровождается примерами, которые легко повторить самому. Уверенно рекомендую всем, кто целится на технические интервью.

Joko Susilo ID Verified learner
★ 4 · 2026-03-28T06:24:12+00:00

Persiapan interview teknikal saya jadi jauh lebih terarah setelah ikut kursus ini. Penjelasan soal struktur data seperti linked list, stack, dan tree ditulis dengan contoh yang gampang diikuti. Saya paling terbantu di bagian pola algoritma seperti sliding window dan dua pointer, itu sering banget keluar di interview. Pembahasan kompleksitas waktu juga bikin saya lebih sadar soal efisiensi kode. Sayangnya bagian dynamic programming terasa agak singkat dan saya butuh referensi tambahan. Tapi secara keseluruhan ini fondasi yang sangat bagus buat yang mau lolos tes coding.

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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.

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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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