The only exception I can think of where having a good understanding of Big O is crucial is when you will be tasked with implementing a product from scratch, for example the storage engine under Amazon S3 using R-B tree or something.
Having said that, it still doesn't explain the rationale behind whiteboard interviews, apart from the common argument of testing how someone deals with pressure... except it's induced pressure so highly unrealistic to those we'll face day to day.
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The only exception I can think of where having a good understanding of Big O is crucial is when you will be tasked with implementing a product from scratch, for example the storage engine under Amazon S3 using R-B tree or something.
Having said that, it still doesn't explain the rationale behind whiteboard interviews, apart from the common argument of testing how someone deals with pressure... except it's induced pressure so highly unrealistic to those we'll face day to day.