Nice Xplanation of O(n log n) and The Big O in general

Understanding what is meant by “the big O”, O(n^2) or “order of n-squared” and O(n log n) are key in digging into algorithms.

Here’s a nicely written and understandable tutorial:

http://www.crsr.net/Notes/BigO.html

If you’re like me and didn’t (or don’t) know what log stands for, it’s Logarithm.