Hi all,
I have a list x:
> x=list(a=c('1','2'),b=c('2','3'),c=c('1','2'),d=c('2','3'))
I can get the unique elements with unique(), but how can I get the
number of duplicates for each unique elements?
> unique(x)
[[1]]
[1] "1" "2"
[[2]]
[1] "2" "3"
Thanks
--
Best,
Zhenjiang
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