The program is essentially equivalent to program 1. However, instead of dice,
you start with N dots, each dot representing a particle. Instead of two
outcomes {0,1}you have the two outcomes {L,R}, L and R stand for being in the
left or the right compartment. The equivalence of the two processes is
described in Chapter 7. The program chooses a particle at random, then chooses
either R or L at random and place the particle in either the R or L
compartment, respectively. The graph follows the total number of particles in
the left compartment from the initial to the equilibrium state. This is
essentially a simulation of an expansion of an ideal gas.