nlattessi

Seminario_TP3_EJ05

May 9th, 2012
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Lisp 0.22 KB | None | 0 0
  1. (defun ej5 (l1 l2)
  2.     (defun posnum (num lista &optional (cont 1))
  3.         (if (eq num cont)
  4.             (car lista)
  5.             (posnum num (cdr lista) (+ cont 1))
  6.         )
  7.     )
  8.     (if (null l2) nil
  9.         (cons (posnum (car l2) l1) (ej5 l1 (cdr l2)))
  10.     )
  11. )
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