About PatternDSA
PatternDSA is an online learning platform that teaches data structures and algorithms through 23 core coding patterns. Our mission is to help developers prepare for technical interviews by recognizing repeatable patterns instead of memorizing hundreds of random problems.
The platform offers:
- Interactive visualizations that execute each pattern step by step
- Code templates in 6 languages — JavaScript, Python, Java, C#, C++, and Swift
- Curated LeetCode practice problems that stress each pattern from different angles
- Progress tracking to monitor your learning journey
Pattern recognition beats memorization
Interview prep usually starts the same way: open a problem list, solve until the count looks respectable, then freeze in the interview because the question was worded differently. The count was never the point. Recall is not the skill being tested — recognition is.
Sort a large problem set by technique rather than topic and the redundancy is obvious. Problems are costumes; patterns are the actors underneath. So each module leads with the signal — the specific phrasing in a problem statement that should trigger the pattern — because recognising the shape in the first sixty seconds is worth more than having seen that exact problem before.