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Associated article: Constructing Combinations using LISP

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Published source code accompanying John Swartz's article in which he uses LISP when needing a simple solution to complex combination problems.

					_ALGORITHM ALLEY_
by John Swartz

Listing One

;   Demonstration of construction of a constrained combination
;   using symbolic data.     Programmer:  John Swartz,  Austin  TX

(defun makeset (lat)
    (cond ((null lat)  ())
          ((member (car lat)(cdr lat) :test equal)
	                    (makeset (cdr lat)))
          (t  (cons (...
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