public override double calculateFitness(Individual individual, double fitness)
{
string individualString = individual.ToString();
if (!checkEnds(individual) || !checkOperatorPair(individual) || checkZeroDivision(individual))
{
fitness = Double.NegativeInfinity;
}
else
{
int sum = evalExpression(individualString);
int difference = Math.Abs(finalTarget - sum);
if (sum <= 0)
{
fitness = Double.NegativeInfinity;
}
else if (difference > 0)
{
fitness = -difference;
}
else if (difference == 0)
{
fitness = sum;
}
}
return(fitness);
}
private bool checkZeroDivision(Individual values)
{
string valuesString = values.ToString();
if (valuesString.Contains("/0") == true)
{
return(true);
}
else
{
return(false);
}
}