You could try reading/skimming over the book "Cracking the code interview" to get some insight in how the company handles interviews. The big five are in there

You could try reading/skimming over the book "Cracking the code interview" to get some insight in how the company handles interviews. The big five are in there so you'd get more information that way. Besides that, a week should be okay if you study hard and got good resources.