如何将单词拆分为双字节,包括重复单词？

使用base的另一种方法R是使用mapply和substr:

nc <- nchar("detected")
mapply(function(x, y){substr("detected", x, y)}, x=1:(nc-1), y=2:nc)
# [1] "de" "et" "te" "ec" "ct" "te" "ed"

没有包你可以这样做:

test_domain <- c("detected")
temp <- strsplit(test_domain ,'')[[1]]
sapply(1:(length(temp)-1), function(x){paste(temp[x:(x+1)], collapse='')})
# [1] "de" "et" "te" "ec" "ct" "te" "ed"