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Matthew Butterick 9 years ago
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@ -34,7 +34,7 @@ The building has an indefinite number of floors in both directions. So the ultim
@subsection{Alternate approach}
Rather than counting matches with @racket[regexp-match*], we could also convert the string of parentheses into a string of numbers directly.
Rather than counting matches with @racket[regexp-match*], we could also convert the string of parentheses directly into a list of numbers.
@chunk[<q1-alt>
(define (elevator-string->ints str)