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Append item to child list

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Hi all,

I want to append an item to last item in a list, like this :

lst ((x1 y1) (x2 y2) (x3 y3))

and after appending z3 to last list in lst >> lst ((x1 y1) (x2 y2) (x3 y3 z3))


Can someone tell me how I can perform it?

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(subst (append (last lst) (list 'z3)) (last lst) lst)
(reverse (cons (append (car (reverse lst)) (list 'z3)) (cdr (reverse lst))))


Edited by rlx
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Lee Mac

One more for fun -

(reverse (cons (reverse (cons 'z3 (reverse (last lst)))) (cdr (reverse lst))))


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