public int Neighbours(int i, int j)
{
Spin center = spins[i, j];
int sum = center.GetSpin() *
(spins[Overflow(i + 1), Overflow(j)].GetSpin() +
spins[Overflow(i - 1), Overflow(j)].GetSpin() +
spins[Overflow(i), Overflow(j + 1)].GetSpin() +
spins[Overflow(i), Overflow(j - 1)].GetSpin());
return(sum);
}
public SpinSystem(int jay, int length)
{
random = new Random();
this.Length = length;
spins = new Spin[length, length];
for (int i = 0; i < length; i++)
{
for (int j = 0; j < length; j++)
{
spins[i, j] = new Spin(random.Next(1, 2));
}
}
J = new Spin(jay);
OldEnergy = this.GetEnergySystem();
}
