Define show-list to act like Lisp's PRINT, except that it should print square brackets instead of parentheses. (Printing to a string and replacing parentheses doesn't count.)
Both functions should be able to print any S-expression, including atoms.
> (show-list '(a b c)) → [A B C]
ってのを見つけました。
これを、"ANSI Common Lisp"の第3章までの知識で解きなさい、ってんですけ ど、オジサンの頭ではどーにもなりません。