http://www.amazon.ca/Purely-Functional-Structures-Chris-Okas...
It's one of the few cs books that I refer to regularly when coding.
https://github.com/liuxinyu95/AlgoXY
The PDF isn't included, but it's generated by the default makefile.
(There's also a PDF-download option on the Scribd mirror -- check the HN title -- but that insists on a Facebook login).
http://www.amazon.ca/Purely-Functional-Structures-Chris-Okas...
It's one of the few cs books that I refer to regularly when coding.