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Memoization is the technique to "remember" the result of a computation, and reuse it the next time instead of recomputing it, to save time. It does not care about the properties of the computations. Dynamic programming is the research of finding an optimized plan to a problem through finding the best substructure of the problem for reusing the computation ...


3

There is no one true answer. It depends on context. The most common context is one where polynomial-time is taken as more or less synonymous with efficient, so if you had no further context, I would certainly guess "polynomial time". Polylogarithmic time is used only in very narrow contexts. In general, if you think your audience might not be sure about ...


1

I understand "to bail out" as to give up permanently; "to back out" is to give up some track, possibly to try something else.


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