Pretty sure the d-facto algorithms book in academia is Introduction to Algorithms by MIT press.
McGraw Hill - Introduction To Algorithms
It is expensive though, though there may be other options . . . such as a pdf.
Also, I've read Algorithms in C++, its a decent read.
edit: and dang, poster above me got it first 😛
Sedgewick's 'Algorithms in C' is pretty good from that perspective, although it may be a bit dated now.