Percolation

Outline:
What is Percolation?;
Model;
Historical development;
Code and its explanation;
Conclusion.

What is Percolation?

Model and First mention
Percolator:

Given a composite systems comprised of randomly distributed insulating and metallic materials: what fraction of the materials need to be metallic so that the composite system is an electrical conductor?
Task:

The plots below show the site vacancy probability p versus the percolation probability for 20-by-20 random grid (left) and 100-by-100 random grid (right)
To model a percolation system, create a data type Percolation with the following API:

Code

OUTPUT: