numberstring <- "0123456789" numberstring_split <- strsplit(numberstring, "")[[1]] for (number in numberstring_split) { print(number) } # [1] "0" # [1] "1" # [1] "2" # [1] "3" # [1] "4" # [1] "5" # [1] "6" # [1] "7" # [1] "8" # [1] "9"