some solutions for MIT Press's "structure and interpretation of computer programs", I guess
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(define (cont-frac n d k) |
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(define (loop res t) |
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(if (eq? t 0) |
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res |
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(loop (/ (n t) |
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(+ (d t) res)) |
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(- t 1)))) |
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(loop 0 k)) |
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(define (cont-frac-rec n d k) |
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(if (eq? k 0) |
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0 |
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(/ (n 1) (+ (d 1) (cont-frac-rec n d (- k 1))))))
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