Honestly, I found the books (eg; Cracking the Coding Interview) to be decent at giving a quick overview. At the end of the day, doing a bunch of medium difficu

Honestly, I found the books (eg; Cracking the Coding Interview) to be decent at giving a quick overview. At the end of the day, doing a bunch of medium difficulty and some hard difficulty questions on leetcode proved to be the best preparation. By the time you get to your interviews, you've probably seen a variation on what they're asking. I didn't find doing more interviews to be much more helpful than just doing a bunch of practice questions (if you're already good at interviewing in general). Still, I think this garbage is annoying for senior developer positions or once you're at least a few years out of school. Having to practice implementing a topo-sort in 10 minutes or doing some tedious combinatorial problem gives zero insight into good software engineering practices. System design questions, on the other hand, are actually useful.