[pincubator]

You should also keep in mind that most of those companies expect applicants to practice that kind of puzzles/code challenges before. A couple of years ago, I was also in a similar state-of-mind with you, but when I get to know people who got good developer jobs at top companies, they all suggested me to study code challenges/puzzles that can be found online. So imho, you should do more research on what type of questions people get to asked in the companies you are looking for, and just practice.