This might solve your problem. I have changed the method signature slightly
public class Test
{
private void replaceIndividuals(int individualsTurnover) {
//individualTurnover = number of individuals I need to re-generate
while(individualsTurnover > 1)
{
individualsTurnover = individualsTurnover - replaceIndividuals();
//I am deducting this count because those many individuals are already created
}
//This is the only possible count > 0
if(individualsTurnover == 1)
{
mutate();
}
}
/**
*
* @return No of individulas created
*/
private int replaceIndividuals() {
int random = generator.nextInt(10);
if (random < 1) {
// generates one individual via mutation
mutate();
retrun 1;
}
else if (random < 2) {
// generates one individual randomly
createRandomIndividual();
return 1;
}
else {
//generates two individuals by crossing-over individuals from a pool of parents
crossover();
return 2;
}
}
}