Created
November 11, 2008 02:17
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| (define (fast-expt b n) | |
| (define (iter a b count) | |
| (cond ((= count 0) a) | |
| ((even? count) (iter a (square b) (/ count 2))) | |
| (else (iter (* a b) b (- count 1))))) | |
| (iter 1 b n)) |
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