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March 22nd, 2005

Solution to SICP Exercise 1.12

Solution to Exercise 1.12:

(define (pascal row col)
  (cond ((or (= 0 col) (= row col)) 1)
        (else (+ (pascal (- row 1) (- col 1))
                 (pascal (- row 1) col)))))

Posted by Ken Dyck in Programming

This entry was posted on Tuesday, March 22nd, 2005 at 8:23 pm and is filed under Programming. You can follow any responses to this entry through the comments RSS 2.0 feed. You can leave a response, or trackback from your own site.

One Response to “Solution to SICP Exercise 1.12”

Rob G says:

I have the same procedure but I just added some protective conditions to deal wonky input such as:
(note: I consider rows and cols to both begin with index 0)
col gt row, row lt 0, col lt 0

July 17th, 2007 at 8:03 pm

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