On 8月16日, 下午8时49分, James Reeves <weavejes...@googlemail.com> wrote:
> On Aug 16, 10:02 am, botgerry <botge...@gmail.com> wrote:
>
> > 1: searching in a, if find one inner vector includes number 9 then
> > append it a number 13
> > [[1 2 3 4] [ "ok" "metoo"] [ 5 8 9 ]] => [[1 2 3 4] [ "ok" "metoo"]
> > [ 5 8 9 13]]
>
> (into []
> (for [x a]
> (if (contains? x 9)
> (conj x 13)
> x)))
this much better ,but should s/contains/includes
> > 2: searching in a, if found two or many inner vectors include same
> > element the merge them as one inner vector
> > others not touch
>
> > (def b ( conj a [ 5 10 "oops"])) => [[1 2 3 4] ["ok" "metoo"] [5 8
> > 9] [5 10 "oops"]]
> > in b, [5 8 9] and [5 10 "oops"] both include 5, it should be merge to
> > [5 8 9 10 "oops"] :
> > [[1 2 3 4] ["ok" "metoo"] [5 8 9] [5 10 "oops"]] => [[1 2 3 4] ["ok"
> > "metoo"] [5 8 9 10 "oops"]]
>
> Does the order matter? If it doesn't, this could probably be most
> easily done with sets and maps.
order don't matter.
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