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kouddy/SICP 2.33

Created April 12, 2015 18:54
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SICP 2.33
(define (map proc sequence)
(accumulate (lambda (x y) (cons (proc x) y)) null sequence))
(define (append seq1 seq2)
(accumulate cons seq2 seq1))
(define (length sequence)
(accumulate (lambda (x y) (+ y 1)) 0 sequence))
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