Sha256: 2c5d3febbba296ad4b76bd113ad11b97f638f2994993494d5a1ce88190f2ecf4
Contents?: true
Size: 676 Bytes
Versions: 69
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Stored size: 676 Bytes
Contents
defmodule CryptoSquare do
@doc """
Encode string square methods
## Examples
iex> CryptoSquare.encode("abcd")
"ac bd"
"""
@spec encode(String.t()) :: String.t()
def encode(""), do: ""
def encode(str) do
normalized = normalize_string(str)
section_length = normalized |> byte_size |> :math.sqrt() |> Float.ceil() |> trunc
normalized
|> String.graphemes()
|> Enum.chunk(section_length, section_length, List.duplicate("", section_length))
|> List.zip()
|> Enum.map(&Tuple.to_list/1)
|> Enum.join(" ")
end
defp normalize_string(str) do
str
|> String.downcase()
|> String.replace(~r/[^a-z0-9]/, "")
end
end
Version data entries
69 entries across 69 versions & 1 rubygems