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Paths Visualize Gym Practice Map About

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Practice

Pattern gym

Read a problem. Name the pattern. Ten quick reps train the reflex you need in interviews.

Karle means “do it.” Don’t just read it.

A free, open-source way to learn data structures and algorithms by watching them run.

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Foundations
Core Patterns
Recursion, Trees & Graphs
Optimization

Practice

Algorithm visualizer
Practice problems
Pattern gym
Pattern map

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