alt Hacker News>This would be the solution for any problem/algorithm, wouldn't it?
Yes, but it suffers from a large amount of space complexity, and probably would have high constant factors in practice.
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bmacho • last Sunday at 9:21 AM
Exactly.
So what I wrote debunks your assumptions and proves your argument wrong.
This is how conversations normally go.
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Using e.g. a single zettabit-sized look-up table to give the 64-bit result of a multiplication of two 32-bit numbers suffers from a similar problem. But if we're talking about practical concerns there are already faster methods than random access in >100 exabytes of memory. And if we're talking theoretical concerns your answer still hasn't addressed the question of how to multiply numbers fast.