I think you want the set operations:

> list1<-c(1,3,6,8,9)
>  list2<-c(3,5,1,0)
> union(list1, list2)
[1] 1 3 6 8 9 5 0
> intersect(list1, list2)
[1] 1 3
>



On 10/28/06, Milton Cezar Ribeiro <milton_ruser@yahoo.com.br> wrote:
>
> Hi there,
>
> Could someone help to compare to list. I do something like:
>
> list1<-c(1,3,6,8,9)
> list2<-c(3,5,1,0)
> mathlist<-NULL
>
>   for (i in list1) {
>     for (j in list2) {
> if (i==j) mathlist<-c(mathlist,i)
>     }}
> mathlist
>
> Is there a more elegant way to solve this question?
>
> Kind regards
>
> Miltinho
> BRAZIL
>
>
>
>
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-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?

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