Data Structures & Algorithms

The core computer-science toolkit for problem solving and interviews.

All 5 Documents 2 Books 2 Courses 1

All levels Beginner Advanced Expert

Beginner

Start here. No background needed beyond school maths.

Book Beginner ↗ External site

Algorithms, 4th Edition (booksite)

Free lectures, code and exercises for the classic Princeton text on sorting, searching, graphs and strings, in Java.

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Advanced

Once the basics are comfortable.

Book Advanced ↗ External site

Open Data Structures

A free textbook on data structures with analysis, available in Java, C++ and Python editions.

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