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Nokku.ai DSA Practice
Learn DSA with pictures, then code it in your browser
What's new: free DSA practice on Nokku.ai. 8 lessons explain each data structure with a picture you know (a stack is a pile of plates), then 24 problems you solve in your browser in Python or JavaScript, with step-by-step hints and a weekly leaderboard. Who it's for: anyone preparing for coding interviews who finds DSA intimidating. Why it matters: memorised solutions fade fast. Starting from a picture makes ideas stick, and it's free, with no account needed to start.
Data structures and algorithms are the part of coding interviews most people dread. Most tutorials start with code. We wanted to start with something you already understand.
So Nokku.ai now has free DSA practice built around pictures:
🍽️ A stack is a pile of plates
☕ A queue is the coffee line
🚂 A linked list is a train
🚇 A graph is a subway map
Each of the 8 lessons starts with a picture, then a diagram you step through, then a quick quiz. Then you solve original interview problems right in your browser, in Python or JavaScript, against real tests. Your code runs privately in your browser.
Stuck? Hints come one step at a time, and every problem has a fully explained solution.
🆕 Our favourite new feature came from a reader on dev.to. They suggested closing the lesson and rebuilding the code from the picture alone. So every topic now ends with a "Rebuild it from the picture" challenge: the lesson is hidden, you predict each step of the picture, then write the code from scratch.
🏆 There's also a weekly leaderboard: 10 points for easy, 20 for medium, 30 for hard. It starts fresh every Monday, and each week's top learners get a free, verifiable certificate. (Peeked at the solution? No points for that one. It keeps things fair.)
It's free, and you don't need an account to start.
We'd love your feedback: which picture finally made a data structure click for you? 🐟
About Nokku.ai DSA Practice on Product Hunt
“Learn DSA with pictures, then code it in your browser”
Nokku.ai DSA Practice was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #242 on the daily leaderboard. What's new: free DSA practice on Nokku.ai. 8 lessons explain each data structure with a picture you know (a stack is a pile of plates), then 24 problems you solve in your browser in Python or JavaScript, with step-by-step hints and a weekly leaderboard. Who it's for: anyone preparing for coding interviews who finds DSA intimidating. Why it matters: memorised solutions fade fast. Starting from a picture makes ideas stick, and it's free, with no account needed to start.
On the analytics side, Nokku.ai DSA Practice competes within Education, Software Engineering and Developer Tools — topics that collectively have 645.8k followers on Product Hunt. The dashboard above tracks how Nokku.ai DSA Practice performed against the three products that launched closest to it on the same day.
Who hunted Nokku.ai DSA Practice?
Nokku.ai DSA Practice was hunted by Payanai Team. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Nokku.ai DSA Practice including community comment highlights and product details, visit the product overview.
Payanai Team
Hi Product Hunt! 👋
Data structures and algorithms are the part of coding interviews most people dread. Most tutorials start with code. We wanted to start with something you already understand.
So Nokku.ai now has free DSA practice built around pictures:
🍽️ A stack is a pile of plates
☕ A queue is the coffee line
🚂 A linked list is a train
🚇 A graph is a subway map
Each of the 8 lessons starts with a picture, then a diagram you step through, then a quick quiz. Then you solve original interview problems right in your browser, in Python or JavaScript, against real tests. Your code runs privately in your browser.
Stuck? Hints come one step at a time, and every problem has a fully explained solution.
🆕 Our favourite new feature came from a reader on dev.to. They suggested closing the lesson and rebuilding the code from the picture alone. So every topic now ends with a "Rebuild it from the picture" challenge: the lesson is hidden, you predict each step of the picture, then write the code from scratch.
🏆 There's also a weekly leaderboard: 10 points for easy, 20 for medium, 30 for hard. It starts fresh every Monday, and each week's top learners get a free, verifiable certificate. (Peeked at the solution? No points for that one. It keeps things fair.)
It's free, and you don't need an account to start.
We'd love your feedback: which picture finally made a data structure click for you? 🐟