Good refresher course on "O (N)"?

Question

I learned all about the costs of the computational algorithm in college, but it was so long ago, I forgot all that. Are there any hiking trips that cover the entire subject? It seems to me that there was more than I remember. I want to upgrade some of my core skills.

Answer 1

Big-O departure for eight year olds?

Answer 2

You can find various tutorials by searching for complexity analysis.

Wikipedia (analysis of algorithms) is always a good place for quick updates.

Answer 3

This is a good resource with some tests:

Difficulty and Big-O Note