In a way - I read Programming Interviews Exposed, and it definitely helped to brush up on implementation details, but Skiena offers more of a cookbook approach

In a way - I read Programming Interviews Exposed, and it definitely helped to brush up on implementation details, but Skiena offers more of a cookbook approach to tackling algorithmically hard problems. The second half is full of generalized problems, as well as the potential approaches to solving them using the concepts introduced earlier. While this might not be as used on an interview (since the problems may be a little too involved), I think it's definitely much more valuable for actually solving problems.