Algorithms. What do you need to know to start this subject?

Question

Algorithms

Hello! In many forums I see words, for example, "complexity algorithm O (log (N))", I would like to know what this means. N. Virta looked, but there is Pascal, and now I am studying C, I would like to know where there are books on C / C ++ related to the topic of algorithms. From mathematics, as I understand it, the following sections are needed:
1) Mathematical analysis
2) Combinatorics
3) Graphs
4) Linear algebra
5) Boolean algebra

Answer 1

If you want to learn about the algorithm of complexity O(log(N)) , then it is better to start acquaintance with the book "Grocay Algorithms", you can find it on the net. For the first acquaintance with the direction of algorithms, I did not find anything better, although at one time I rummaged through a bunch of books, and only in this one they explained in human language. Well, the code itself can always be shifted from one language to another, if you know the basics