/**
* Compare one member to another. This requires knowledge of the fitness function which cannot be
* supplied here, hence must be provided in a subclass.
*
* @returns 1 if member indexed a is greater than b, 0 if they are equal, -1 if member indexed by
* a is less than b.
*/
public int compareSolutions(Solution a, Solution b) {
double af = ((SOSolution) a).getObjective();
double bf = ((SOSolution) b).getObjective();
return objConstraints.compare(af, bf);
}
