A lot of experienced programmers would struggle with those interview questions. They tend to be pretty far detached from the what most programmers actually do i

A lot of experienced programmers would struggle with those interview questions. They tend to be pretty far detached from the what most programmers actually do in the wild. Thankfully, a number of good companies don’t use silly brain teasers to select candidates, opting for pair programming exercises instead. I would advise spending time learning about TDD, agile etc