I would not hire someone for a developer/engineer position if they cannot do this.
This is not supposed to be an algorithm you memorize. It's just very basic math, not even computer science. To understand how binary numbers are represented is a MUST.
People tend to see being asked to work on similar problems, or being asked how a sort algorithm works, is ILLOGICAL and BAD, while knowledge in such fundamental concepts is what differs a candidate A from B.
Anyone can learn how to USE technology X or Y, and by the time they will be experts in that specific technology, but strong fundamental knowledge goes ways beyond that. Being able to solve a problem in a technology-agnostic way is what truly matters.
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I would not hire someone for a developer/engineer position if they cannot do this.
This is not supposed to be an algorithm you memorize. It's just very basic math, not even computer science. To understand how binary numbers are represented is a MUST.
People tend to see being asked to work on similar problems, or being asked how a sort algorithm works, is ILLOGICAL and BAD, while knowledge in such fundamental concepts is what differs a candidate A from B.
Anyone can learn how to USE technology X or Y, and by the time they will be experts in that specific technology, but strong fundamental knowledge goes ways beyond that. Being able to solve a problem in a technology-agnostic way is what truly matters.