I'm in the same boat as you (20,web/mobile). I've done my fair share of interview and here's what I've found: Anything that's worth doing involves a heavy amou

I'm in the same boat as you (20,web/mobile). I've done my fair share of interview and here's what I've found: Anything that's worth doing involves a heavy amount of math. Most of my day is spend doing UI and I tend to deal with a heavy amount of math each day. So I don't know what you mean by "I'm web/mobile" but unless you are purely a designer*, your doing math. The math that they ask at interviews usually doesn't involve anything that isn't reasonably expected to be in an algorithms book. To that extent they usually avoid some of the more specialized algorithms. eg, I've had BSTs but not Red-black trees but it's not unusual to have a question on RBTs depending on the company. Other than knowing your algos really well that's about it.