This is HtDP Excercise 12.4.2.

Here is the tests i conducted:

So it works. But I think this is not the way it was supposed to be solved. In their hint, they ask to use only recursion an append. I didn't really get it. Could someone suggest a better answer.

This is HtDP Excercise 12.4.2:

Here is the tests I conducted:

It works, but I think this is not the way it was supposed to be solved. In their hint, they ask to use only recursion and append, but I didn't really get it. Could someone suggest a better answer?

This is HTDP Excercise 12.4.2 :- Page 161

(insert-everywhere 'a '()) returns '((a))--- (insert-everywhere 'a '(b)) returns '((a b) (b a)) --- (insert-everywhere 'a '(b c d)) returns '((a b c d) (b a c d) (b c a d) (b c d a))

This is HtDP Excercise 12.4.2.

(insert-everywhere 'a '()) ; returns '((a))
(insert-everywhere 'a '(b)) ; returns '((a b) (b a))
(insert-everywhere 'a '(b c d)) ; returns '((a b c d) (b a c d) (b c a d) (b c d a))