Find a function FUN that leads to the following output:
FUN("mile")## [1] "e" "i" "l" "m"FUN("lime")## [1] "e" "i" "l" "m"FUN("camel")## [1] "a" "c" "e" "l" "m"FUN(paste(sample(letters), collapse = ""))## [1] "a" "b" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l" "m"
## [14] "n" "o" "p" "q" "r" "s" "t" "u" "v" "w" "x" "y" "z"Hint: aim to keep the answer simple. The main logic of the function can often be summarized in a single line of R code.
Answer: click to reveal
We can write the function as follows:
FUN <- function(x) {
return(sort(strsplit(x, split = "")[[1]]))
}This function splits the input string into single characters and then performs an alphabetical sort. For example:
x <- "camel"
strsplit(x, split = "") ## [[1]]
## [1] "c" "a" "m" "e" "l" sort(strsplit(x, split = "")[[1]]) ## [1] "a" "c" "e" "l" "m"For a full collection of R programming tutorials and exercises visit my website at codeRtime.org and the codeRtime YouTube channel.