What free books (or course materials) are there that cover undergraduate algorithms material? I added "course materials" in case there exist comprehensive sets of lecture notes/video/other that are not quite organized in a book format but that are at least as effective as a book.

A similar question about Language and Automata.

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    $\begingroup$ What about Introduction to algorithms at MIT OpenCourseWare? It has 24 video lessons and 24 recitation videos (models of computation, sorts, binary search, AVL trees, ...) + problem sets and solutions $\endgroup$ Commented Sep 19, 2016 at 20:36
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    $\begingroup$ Thanks for the link. I wonder why they say that CLRS is required though. $\endgroup$
    – Manu
    Commented Sep 19, 2016 at 21:14
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    $\begingroup$ The notes by Jeff Erickson are well-known, and what I have read from them is excellent: jeffe.cs.illinois.edu/teaching/algorithms $\endgroup$ Commented Sep 20, 2016 at 0:24
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    $\begingroup$ Dasgupta, Papadimitriou, and Vazirani used to available on Umesh's website but the link doesn't work anymore. The chapters seem still accessible though. $\endgroup$
    – Kaveh
    Commented Sep 20, 2016 at 4:08
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    $\begingroup$ ps: also check Tim's course on coursera. $\endgroup$
    – Kaveh
    Commented Sep 20, 2016 at 4:09

1 Answer 1


Jeff Erickson's lecture notes on Algorithms are free, with a Creative Commons license. Other than Algorithms, this site also contains lecture notes for Models of Computation, which are also with a CC license.


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