[R] Find strings in a array

[Stephen C. Upton]

Francisco,

Is this what you're looking for?

> aa
[1] "ab" "cd" "de" "aa"
> bb
[1] "ab" "cd" "de" "df" "gg" "FF"
> bb %in% aa
[1]  TRUE  TRUE  TRUE FALSE FALSE FALSE
> aa %in% bb
[1]  TRUE  TRUE  TRUE FALSE

OR
> match(aa,bb)
[1]  1  2  3 NA
> match(bb,aa)
[1]  1  2  3 NA NA

If you have a string pattern, then you might also want to take a look at
grep .

HTH
steve

Francisco do Nascimento Junior wrote:

> I need to know which strings of an array that are in another array.
> What a best solution?
>
> Tks,
> Francisco.
>
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> Francisco Júnior,
> Computer Science - UFPE-Brazil
> "One life has more value that the
> world whole"
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
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