For students and software engineers
Loopa, Mastering Data Structures & Algorithms
A pattern-first platform to learn Data Structures & Algorithms through practice, and visualization.
20 Data Structure
20 Algorithms
100 Problems
Solutions
What You'll Get
- Data Structures & Algorithms Explained Clearly
- Step-by-Step editorials with How to Think, code, walkthroughs, and visualizations
- Progress step by step with 100 curated Easy → Hard problems.
- Videos, animations, and code visualizations that make concepts stick.
- Real-world use cases & complexity analysis
- Code directly in our integrated editor with real-time execution and feedback
20 Data Structures
- Concise text explanation with examples
- Animated video to build intuition
- Visualization of state transitions and operations
- Code implementations in multiple languages
- Time & space complexity analysis (average, worst, amortized)
- Use cases spanning real-world systems, core CS, and algorithms
20 Algorithm Methods
- Clear text explanation with an illustrative example
- Animated video walkthrough for intuition
- Visualization of how states change step by step
- Code implementations in multiple languages
- Time & space complexity analysis with common pitfalls
- Use cases across real life, computer science, and algorithmic design
100 Problems
- Mapped to the 20 Data Structures + 20 Algorithm Methods for direct application
- Train on key patterns that generalize across problems
- Hand-picked, real-world inspired problems with meaningful context
- A natural difficulty curve (Easy → Medium → Hard) to steadily grow your skills
- Hints to guide you toward the right approach without giving away the answer
Solutions for each problem
- How to Think: approaching problems systematically
- Overview: short explanation of the concept
- Steps: implementation explained step by step
- Code Implementation: clean, well-commented, and interview-ready
- Complexity Analysis: time/space trade-offs and pitfalls
- Example Walkthrough: tabled traces to show state changes
- Visualization: animated execution that makes the logic click
Price Plans
1
Month
$19
$19/Month
Save 50%
3
Months
$29
$9.6/Month
Save 83%
12
Months
$39
$3.2/Month
Full access to all 20 Data Structures & 20 Algorithm methods, and 100 Problems.
Full access to solutions for 100 problems with How to Think, code, and visualizations.
Access to integrated code editor: run, debug, and submit in real time.
Points & rewards: earn as you solve, redeem to extend subscription.
Points & Rewards
Turn learning into real value. Earn points by solving problems or inviting friends, then redeem them for discounts on your subscription.
Refer & Earn
Win-Win: You collect points, your friend gets a 20% discount.
- Refer 1 friend → 250 points (worth 1 month free)
- Refer 2 friends → 500 points (worth 3 months free)
- Refer 3 friends → 750 points (worth 12 months free)
Solve & Earn
- Solve a problem → 2.5 points (≈ $0.076 each point)
- Complete all 100 problems → 250 points (≈ $19, worth 1 month free subscription)