If you want to learn about Algorithms, you need to buy the entire series on Algorithms from Robert Sedgewick:

https://www.amazon.com/Algorithms-Parts-1-4-Fundamentals-Str...

https://www.cs.princeton.edu/~rs/

I don't think there is a single better source on algorithms than everything from Robert Sedgewick.

For anyone wanting to learn algorithms from one of the other heavyweights, not being a C developer, I found this series extremely beneficial:

https://www.amazon.com/Algorithms-Parts-1-4-Fundamentals-Str...

It also helps that Robert Sedgewick has been in compsci forever (got hit PHC in 1975) and is one of the subject matter experts in algorithms.

I learned from Sedgewick http://www.amazon.com/gp/product/032157351X/

However, it was a much earlier edition and all the examples are in Pascal. Having to mentally convert the code from 1-based arrays to 0-based like any decent language has been a major pain over the years.

This looks like a C version: http://www.amazon.com/Algorithms-Parts-1-4-Fundamentals-Stru...