How to sort letters in a string?

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Maybe not the most simple answer, but this will work:

paste(sort(unlist(strsplit(s, ""))), collapse = "")

Or modify the strReverse function that is defined in the help page for ?strsplit to suit our needs. We’ll call it strSort:

strSort <- function(x)
        sapply(lapply(strsplit(x, NULL), sort), paste, collapse="")

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