Scala

def f(n: Int): Unit = {
  if (n > 0) {
    println("Hello World")
    f(n - 1)      
  }
}

I'm learning F# coming from TS and C#

what about this 2 liner? IHMO the beauty of thinking functional is not thinking about for loops but in term of sequences

open System

let n = Console.ReadLine() |> int
seq { 1 .. n } |> Seq.iter (fun _ -> Console.WriteLine("Hello World") )

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OCaml Solution :- let rec print n = if (n > 0) then begin print_endline "Hello World"; print (n - 1) end;;

let () = let n = read_int () in print n;;