Ebook: Handbook of data structures and applications

I used this book in an advanced data structures course. Unfortunately, this book is way too mathematical and very terse. All the pseudocode, if you could call it that, was more of a mathematical language than it was a computer-like language. This is definitely a reference book and is not the kind you read through. All-in-all, don't pay too much for it, but it could come in handy.