Hacker Rank And Elixir

Well it is legal, but it will be executed during compilation, not something you can easily assert.

They don’t give you the name of the function and which parameters it should have? It is in neither the tests provided? (I don’t remember if they provide some).

If you like to learn solving these puzzles I prefer Codewars. If not a great resource to hands on learning is Exercism

This is how you have to write code in hackerrank

defmodule Solution do
#Enter your code here. Read input from STDIN. Print output to STDOUT
  def print_n() do
      n = IO.gets("") |> String.trim |> String.to_integer


      Enum.each(1..n, fn _n -> IO.puts("Hello World") end)
  end
end
Solution.print_n()

this code is for “Hello World” challenge

Again I submitted a Hackerrank challenge called “Reverse a list”
submitted code is here:

defmodule Solution do
  def receive do
      IO.read(:all)
      |> String.trim
      |> String.split("\n")
      |> rev()
      |> Enum.map(& IO.inspect(String.to_integer(&1)))
  end
  def rev(list), do: rev(list, [])
  def rev([], acc), do: acc
  def rev([h | t], acc), do: rev(t, [h | acc])
end
Solution.receive()