https://en.wikipedia.org/wiki/Bijection
a code challenge: https://practice.geeksforgeeks.org/problems/design-a-tiny-url-or-url-shortener2031/1
iex> BijectiveFunction.encode(12345)
"dnh"
iex> BijectiveFunction.decode("dnh")
12345If available in Hex, the package can be installed
by adding bijective_function to your list of dependencies in mix.exs:
def deps do
[
{:bijective_function, "~> 0.1.0"}
]
end