Nth Prime

Ringkasan Tantangan

Given a number n, determine what the nth prime is.

Visit the nth-prime exercise on Exercism to read the full instructions and download the exercise files.

Community Solutions

Lihat Solusi Komunitas

The following are the top 3 community solutions by stars:

Solution 1 by @gumminoppe (⭐ 1) — View on Exercism
Solution 2 by @jinwoo (⭐ 0) — View on Exercism
Solution 3 by @Favio0405 (⭐ 0) — View on Exercism

Source: Exercism ocaml/nth-prime

💡 Lihat Solusi

let nth_prime n =
  let next i = if i mod 3 = 1 then i + 4 else i + 2 in
  let rec loop i ps = function
    | 0 -> List.hd ps
    | n ->
        if List.for_all (fun p -> i mod p > 0) ps
        then loop (next i) (i :: ps) (n - 1)
        else loop (next i) ps n
  in
  if n <= 0