In mathematics, a pairing function is a process to uniquely encode two natural numbers into a single natural number.
This is a ruby implementation of the that provides two functions, pair and unpair.
To encode a pair, we use
f(a, b) = [(a + b)^2 + 3a + b]/2
To decode this, we use
c = int[[sqrt(8N + 1) - 1]/2]
a = N - c(c + 1)/2
b = c(c + 3)/2 - N
gem 'pairing_function', '~> 0.0.8'input_x = rand(100_000)
input_y = rand(100_000)
encoded_value = PairingFunction.pair(input_x, input_y)
PairingFunction.unpair(encoded_value)Negative integers are not supported
Copyright (c) 2013 Phaneendra Marisa Licensed under the WTFPL license.