Development · intermediate
Data Structures and Algorithms in Python
Master data structures and algorithms in Python and crack technical interviews at top companies. Covers every pattern: arrays, trees, graphs, dynamic programming, and more.
- 10 hours
- 24 lessons
- 6 modules
- updated April 2026
Module 1 freeNo credit cardFull course from $8.99/mo
try it
Try it before you sign up
Read a full lesson and answer 3 questions from the Module 1 quiz. No account needed.
free lesson · read · 25 min
Big O Notation, Arrays, and Core Patterns
Big O describes how the time or space an algorithm uses scales with input size n. We care about the worst case and drop constants and lower-order terms. Use two pointers to reduce O(n²) brute force to O(n) on sorted…
question 1 of 3 · from the Module 1 quiz
What is the time complexity of two nested for loops that each iterate over n elements?
Pick an answer.
curriculum
6 modules, 24 lessons
Module 1 is free — lessons, hands-on walkthrough and quiz.
- readBig O Notation, Arrays, and Core Patterns25 min
- hands-onMeasuring Complexity in Practice15 min
- videoBig O Notation – CS Dojo30 min
- quizBig O and Arrays Quiz10 min
how it's built
Built by the CloudaQube team
No celebrity instructor — here is exactly what goes into the course instead.
- 01 6 guided hands-on walkthroughs you run in a real environment.
- 02 6 module quizzes — every answer comes with an explanation.
- 03 Last updated April 2026.
- 04 Any module can become a hands-on lab in Labs Studio.
outcomes
What you'll be able to do
- 01 Implement all core data structures from scratch in Python
- 02 Recognise and apply the 10 most common algorithm patterns
- 03 Solve LeetCode-style problems with confidence
- 04 Explain time and space complexity with Big O notation
- 05 Approach technical interviews with a structured framework (UMPIRE) and recognise which patterns apply to common problem types
before you start
- — Python fundamentals (functions, classes, loops)
- — Basic understanding of variables and data types
questions
Before you start
How long does it take?
About 10 hours of lessons, videos and hands-on walkthroughs across 6 modules.
What’s free?
Module 1 in full — lessons, hands-on walkthrough and quiz — with no card required. Any paid plan (from $8.99/mo) unlocks all 6 modules, and starts with a 14-day free trial.
get started
Start the course with Module 1 free.
No card required. Unlock every module from $8.99/mo when you’re ready.