DevLab: Algorithms & Patterns

DevLab helps you actually SEE how code works. Watch algorithms and design patterns run step by step on animated diagrams, synced line-by-line with real code. Perfect for students, self-taught developers, and interview prep — fully offline, no account, no ads.

ALGORITHMS
• Sorting, searching, graphs, and core data structures (stack, queue, and more)
• Press Run and watch each step animate — see exactly what changes and why
• Live variable state + time/space complexity for every algorithm
• Feed in your own input data

DESIGN PATTERNS
• The classic GoF design patterns (Creational, Structural, Behavioral)
• Live UML-style diagrams + everyday scenes that make each pattern click
• Code shown side by side in multiple languages (TypeScript, Python, C++, Java)
• "Problem → participants → when to use" for each pattern

WHY DEVLAB
• Learn by seeing, not just reading
• Works 100% offline — no sign-in, no internet needed
• Clean light & dark themes
• Available in English, Vietnamese, Spanish, French, and Chinese

DevLab turns abstract computer-science concepts into something you can watch and understand.