Generate a unique value for a combination of two numbers

Question

Consider I\'ve two numbers 1023232 & 44. I want to generate a unique number representing this combination of numbers. How can i generate it?

Requirement

Answer 1

If X & Y are Int add a seperator. Always unique.

X = 100, Y = 5 => 100.5

X = 1023232, Y = 44 => 1023232.44