Sha256: 33d926041f705cd843ef439b2c7419d8f091dd62f46b7fd87284452ac2aa6199
Contents?: true
Size: 398 Bytes
Versions: 90
Compression:
Stored size: 398 Bytes
Contents
defmodule RunLengthEncoder do
@spec encode(String.t) :: String.t
def encode(string) do
Regex.scan(~r/([A-Z])\1*/, string)
|> Enum.map_join(fn([run, c]) -> "#{String.length(run)}#{c}" end)
end
@spec decode(String.t) :: String.t
def decode(string) do
Regex.scan(~r/(\d+)(.)/, string)
|> Enum.map_join(fn [_,n,c] -> String.duplicate(c, String.to_integer(n)) end)
end
end
Version data entries
90 entries across 90 versions & 1 rubygems