I'm not planning on programming like this, but just to try to finish this up
. . . .it's still not working. I get an odd error when I actually try to
sort something that iSeq doesn't work on integers. I have no idea where to
still the (first my-list) at the end so it returns, too. No need to reply,
per se. Just reporting on how far I got tonight. I'm sure someone answered
this already and I haven't read through it all enough.
(defn listmerge [l1 l2]
(let [l1first (first l1) l2first (first l2)]
(cond
(empty? l1) l2
(empty? l2) l1
(< l1first l2first)
(cons l1first (listmerge (rest l1) l2))
:else
(cons l2first (listmerge (rest l2) l1))))))
(defn msort [toSort]
(with-local-vars [my-list (for [x toSort] [x])]
(while (rest (var-get my-list))
(let [[l1 l2 & my-list2] (var-get my-list)]
(var-set my-list (concat my-list2 (listmerge l1 l2)))) (first
my-list))))
;; test it out
(msort [4 53 54 3 5 7 8])
On Mon, Jan 12, 2009 at 1:29 AM, e <[email protected]> wrote:
> looks like an awesome book. will check it out more. thanks.
>
>
> On Mon, Jan 12, 2009 at 1:06 AM, Josip Gracin <[email protected]>wrote:
>
>>
>> On Sun, Jan 11, 2009 at 10:33 PM, e <[email protected]> wrote:
>> > thanks for your patience. I think I'm starting to get it.
>> > Interesting discussion on tail recursion.
>>
>> Just to add $0.02... The fact that 'recur' in Clojure is actually used
>> to implement iterative and not recursive processes is easier to
>> understand after reading SICP (chapter 1,
>> http://mitpress.mit.edu/sicp/full-text/book/book.html).
>>
>> >>
>>
>
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