[R] find duplicates... need help!

[njhuang86]

Hi all,
Suppose I have x = c('a', 't', 'c', 'y', 'g')
and also y = c('a', 'a', 'g', 's')

If I do something like x%in%y, I obtain a vector like this: [TRUE, FALSE,
FALSE, FALSE, TRUE] which I can easily turn into this: [1, 0, 0, 0, 1].
I was wondering is there anyway for me to get a vector back in return in the
form of: [2, 0, 0, 0, 1]? Essentially, the 2 will tell me that in the first
position of vector 'x', there were two matches found with vector y.

Thanks a ton in advance!
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