From my (relatively little) experience interviewing, there were some questions that came up frequently: -fibonacci (iterative and recursive versions) -

From my (relatively little) experience interviewing, there were some questions that came up frequently: -fibonacci (iterative and recursive versions) -linked lists (singly or doubly linked):reverse it, cycle checking -difference between a language like C and a language like Python -time complexity of whatever they have you code These are the ones that came in every interview I've had. You might also want to know some OO concepts and other data structures like binary trees and hash tables. If you've listed any projects on your resume, they'll probably ask you questions about those too.