Ninety-Nine Lisp Problems

[parenthesis]

http://www.ic.unicamp.br/~meidanis/courses/mc336/2006s2/funcional/L-99_Ninety-Nine_Lisp_Problems.html

[lsb]

But a malloc ain't one.

[jsmcgd → lsb]

List me!

[cujo]

I looked at the first solution and my reaction is something along the lines of "what????".

Why not just something simple like.. (defun foo(thing) (list (nth (1- (length thing)) thing))

Same applies for problem 2.

[felideon → cujo]

And for number #5 you don't even need to write a function. Why not just use reverse? And notice his indentation and closing of parens is all wrong (i.e. not Lisp style). He's writing Lisp code thinking in a another language[1].

It's still a good exercise to go through them all as a Lisp newb like myself when I'm bored or need a break.

[1] Programming language, not Portuguese. :)

[zitterbewegung → felideon]

Well using reverse sort of misses the point. You are supposed to implement reverse.

[cujo → zitterbewegung]

I just find it a bit interesting that you are supposed to implement things that are given. That sort of defeats the purpose of doing one for a specific language.

[felideon → zitterbewegung]

Ah, well that does make it a bit more interesting. :)

[vikram → cujo]

I think you don't really want to use length. Since it is a program evaluating last it might not be that bad as you have to goto the last element anyway.

Here is mine:

(defun our-last (list) (if (rest list) (our-last (rest list)) list))

[ehedberg → cujo]

Or even (defun last(thing) (car (reverse thing)))

[hsmyers]

Given the context(first two problems), what is a 'box'?