13 lines
334 B
Scheme
13 lines
334 B
Scheme
#lang sicp
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(define (accumulate op initial sequence)
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(if (null? sequence)
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initial
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(op (car sequence)
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(accumulate op initial (cdr sequence)))))
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(define (accumulate-n op init seqs)
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(if (null? (car seqs))
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nil
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(cons (accumulate op init (map car seqs))
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(accumulate-n op init (map cdr seqs)))))
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