Data Structures & Algorithms
The core computer-science toolkit for problem solving and interviews.
Advanced
Once the basics are comfortable.
Course
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MIT 6.006 Introduction to Algorithms
MIT's undergraduate algorithms course with lecture videos, notes and problem sets, covering sorting, hashing, graphs and dynamic programming.
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Book
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Open Data Structures
A free textbook on data structures with analysis, available in Java, C++ and Python editions.
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