I have this vector X<-c("A","B","C") and I need to create a new vector from X where elements are newX <-c("A-B", "A-C", "B-C")... I tried a series of nested for loops, but I can't figure it out.
Any ideas?
Thanks!
Loop trough vector elements... and make new vector
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1 Answers
no for-loops needed here.
sapply(combn(X, m = 2, simplify = FALSE), paste0, collapse = "-")
#"A-B" "A-C" "B-C"
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