How can I interpolate between 2 arrays or lists?

Question

As in having a list of [0, 1, 2, 3, 4, 5] and another of [0, 2, 4, 6, 8, 10]. If I input 1.5 on the first list i should get 3 on the other and so on.

Answer 1

https://en.wikipedia.org/wiki/Linear_regression

google for linear regression in python/java.....