A responsive Twitter/X clone built with HTML, Tailwind CSS, and React featuring core social media functionalities like posting, following, and user interactions.
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Every developer who has prepared for technical interviews knows the struggle: staring at LeetCode problems, trying to understand why an algorithm works, tracing through code line by line, and still feeling uncertain about what's actually happening under the hood. I built LeetChamp to bridge that gap between reading algorithmic concepts and truly understanding them.
When I was grinding through data structures and algorithms, I found myself constantly drawing diagrams on paper, sketching out how elements moved during sorting, or how pointers traversed a linked list. The disconnect between static code and dynamic execution made learning unnecessarily difficult. Traditional resources either showed you the final code or offered static diagrams that couldn't capture the step-by-step transformations that algorithms perform.
LeetChamp is an algorithm visualization platform that brings code to life through interactive, step-by-step animations. Rather than imagining how an algorithm executes, users can see it happen in real-time, with clear visual representations of data transformations at each step.
The platform focuses on helping developers build intuition before writing code—the way developers actually think about problems. By visualizing algorithmic patterns and seeing how data structures behave, learners develop a mental model that makes implementation much more natural.
I built LeetChamp using modern web technologies optimized for performance and interactivity:
The architecture prioritizes performance, ensuring visualizations run smoothly even for complex algorithms operating on large datasets. Every animation frame is optimized to maintain 60fps, creating a seamless learning experience.
Interactive Visualizations: Users can control the speed of execution, pause at any step, and replay sequences to fully understand each transformation. The visual representations use color coding and annotations to highlight what's happening at each stage.
Algorithm Coverage: The platform covers essential data structures and algorithms commonly encountered in technical interviews, from sorting and searching to graph traversal and dynamic programming patterns.
Clean, Intuitive Interface: Drawing from my UI/UX design background, I focused on creating an interface that doesn't overwhelm learners. Controls are accessible, visualizations are clear, and the learning path feels natural rather than cluttered.
Building LeetChamp presented unique challenges, particularly in synchronizing state updates with visual animations and ensuring the visualization logic accurately represented algorithmic behavior. I implemented custom animation queues that batch operations and render them at controlled intervals, giving users meaningful insights into each algorithmic step.
Performance optimization was critical—handling large arrays and complex data structures while maintaining smooth animations required careful state management and efficient rendering strategies. I leveraged React's virtual DOM and implemented memoization techniques to prevent unnecessary re-renders during animation sequences.
LeetChamp represents my philosophy on technical education: concepts become intuitive when you can see them in action. The platform serves as both a learning tool and a testament to my frontend development capabilities—combining algorithmic understanding, performance optimization, and thoughtful UI design.
Future enhancements include adding more advanced algorithms, implementing a personalized learning dashboard with progress tracking, and introducing coding exercises where users can write their own solutions and visualize them. I'm also exploring integration with actual LeetCode problem sets to create a seamless practice-to-visualization workflow.
This project deepened my understanding of:
LeetChamp demonstrates my ability to conceptualize a technical problem, architect a solution, and execute it with production-quality code and design—skills essential for any frontend or full-stack developer role.
Live Demo