How to generate 4 digit random number

Questions & Help Questions
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6

I think this is a better solution. Thanks for sharing.

Update: I have used @hauleth solution to write a generic function for getting a string of length n with just integers:

  @spec random_n_char_number_string(integer()) :: String.t()
  def random_n_char_number_string(n) do
    "~#{n}..0B"
    |> :io_lib.format([(10 |> :math.pow(n) |> round() |> :rand.uniform()) - 1])
    |> List.to_string()
  end

I hope this helps someone else.