My solution is very wrong, sorry for that.
I am just wondering, cant we use memfn to make lastIndexOf as a first
class function here?
areduce can be used too.
(defn last-indexof [cs c]
(areduce cs i lst-idx -1
(if (= c (aget cs i)) i lst-idx)))
(-> "aabbccd" to-array (last-indexof \c))
Regards.
Jestan Nirojan
On Nov 12, 12:07 pm, Jestan Nirojan <[email protected]> wrote:
> I think regex free solution is best for this
>
> (defn last-indexof [s c]
> (->> s (filter #(= c %)) count dec)
>
> On Nov 12, 3:36 am, "jongwon.choi" <[email protected]> wrote:
>
>
>
>
>
>
>
> > Hi
>
> > I'm wondering the best way to express:
>
> > (position #\a "abba" :from-end t)
>
> > Should I use interop?
>
> > (.lastIndexOf "abba" (int \a))
>
> > Thanks!
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