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HaoHaoXueXi — the algorithm website that big tech engineers actually love and use.

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Learning paths

Fast Track

1-3 months interview ready path

Perfect for job seekers and career switchers. Focus on practical problem-solving, common interview patterns, and building confidence through hands-on practice. Get interview-ready quickly with our streamlined curriculum.

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Mastery

Deep dive into theoretical foundations

Ideal for students and engineers who want to truly understand algorithms. Explore mathematical proofs, advanced data structures, complexity analysis, and build a solid theoretical foundation for long-term growth.

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