Question: If R is a regular expression, let R {m,n} represent the expression R m R m+1 R n .

If R is a regular expression, let R{m,n} represent the expression

Rm ∪ Rm+1 ∪ · · · ∪ Rn.

Show how to implement the R{m,n} operator, using the ordinary exponentiation operator, but without “· · · ”.

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