Most leetcoders simply memorize one or two solutions instead of studying algorithms holistically. I suspect that many would spend time understanding that genera

Most leetcoders simply memorize one or two solutions instead of studying algorithms holistically. I suspect that many would spend time understanding that generating gray code can be mapped to mixed-radix number system (nor should us anyway, albeit it's really really cool). Leetcode does not require understanding of advanced data structures either. Instead, it's full of clever tricks and specific solutions with which entry-level ACM participants are well versed.