R: Extract elements from a vector given start/stop positions

Question

Is there a simple way to extract elements from a vector in R if I know the start/end indices for each extraction? For exemple I have:

v <- c("a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t")
start <- c(1, 4, 11, 15)
end <- c(2, 7, 11, 19)

Result should be: c("a", "b", "d", "e", "f", "g", "k", "o", "p", "q", "r", "s")

Answer 1

One option could be:

v[unlist(Map(`:`, start, end))]

 [1] "a" "b" "d" "e" "f" "g" "k" "o" "p" "q" "r" "s"