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feat: 9.5.9

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tmtt 2022-07-29 15:12:07 +02:00
parent cb1753732b
commit 35f43a7909
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examples/power.ss Normal file
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;;; doubly recursive power (expt) function
;;; try using trace-lambda to see the nesting.
(define power
(lambda (x n)
(cond
[(= n 0) 1]
[(= n 1) x]
[else
(let ([q (quotient n 2)])
(* (power x q) (power x (- n q))))])))