Master DSA the way you'll actually use it: by watching it run.
Every structure and algorithm β from arrays to network flow β explained in plain language, animated step by step, and backed by code in C++, Java, Python and JavaScript. Built to make any topic click in 5β10 minutes.
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Daily challenge
Built for speed of understanding
π§© Analogy first
Every concept opens with a real-world comparison before a single line of code.
ποΈ Step-by-step
Pause, rewind, and step through execution one operation at a time.
π 4 languages
C++, Java, Python and JavaScript implementations, side by side.
π Gamified
XP, streaks and badges keep momentum without needing willpower.
Topic
| Operation | Time | Space |
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Pseudocode
Common mistakes to avoid
Common interview questions
| Problem | Link |
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Algorithm Visualizer
Step through sorting and searching algorithms at your own pace. Control speed, pause mid-run, or advance one operation at a time.
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Practice & Quizzes
Jump into any flagship topic's quiz or flashcards, or grab today's coding challenge.
Quick quiz β pick a topic
Coding challenges
Progress & Gamification
Overall completion
Badges
Leaderboard
| # | Learner | XP | Streak |
|---|
Company-wise preparation
Each company leans on a different mix of topics. Focus your last two weeks accordingly.
Contests
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Weekly Speed Round β 5 problems, 60 minutes, ranked by solve time.
Past contests
| Contest | Date | Your rank |
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