Part $2$: Roach.java

Implement a class Roach that simulates the growth of a roach population.

The constructor takes the size of the initial roach population.

The breed method simulates a period in which the roaches breed, which doubles their population.

The spray$($double percent$)$ method simulates spraying with insecticide, which reduces the population by the given percentage.

The getRoaches method returns the current number of roaches.

A testing program called RoachSimulation simulates a population that starts out with $1000$ roaches.

Breed, spray to reduce the population by $15$ percent, and print the roach count.

Repeat three more times.