How to extract the coefficient all the monomials of an arbitrary polynomial efficiently?

At present I know 3 efficient function to generate a list of all the monomials and the corresponding coefficients of an arbitrary polynomial. They are CoefficientRule, MonomialList and GroebnerBasis$$`$$DistributedTermsList. Is there any way can be faster than this 3 functions? Or any other language can manage this more efficiently?

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Aug 27, 2021 at 12:07