Convert numbers in a list to nil when meet conditions?

[maikhanhmst]

Hi,

I want to convert the numbers that less than 2.5 and greater than 4.5 to nil. Could someone help me to do it?

The list: (setq a '(0 1 2 3 4 5)).

The result I want to get: (nil nil nil 3 4 nil).

Thanks.

[Kent1Cooper · Accepted solution]

[As in the other thread...]  One way:

(mapcar '(lambda (x) (if (<= 2.5 x 4.5) x)) a)

[maikhanhmst]

Perfect!!! Thank you so much.