package jcgp.population;

import java.util.ArrayList;
import java.util.Iterator;

import jcgp.CGP.Parameters;

public final class Population implements Iterable<Chromosome> {
	
	private ArrayList<Chromosome> population;
	
	public Population() {
		population = new ArrayList<Chromosome>(Parameters.getPopulationSize());
		for (int c = 0; c < Parameters.getPopulationSize(); c++) {
			population.add(new Chromosome(Parameters.getInputs(),
										  Parameters.getRows(),
										  Parameters.getColumns(),
										  Parameters.getOutputs()));
		}
	}

	@Override
	public Iterator<Chromosome> iterator() {
		return new Iterator<Chromosome>() {
			
			private int index = 0;

			@Override
			public boolean hasNext() {
				if (index < population.size()) {
					return true;
				} else {
					return false;
				}
			}

			@Override
			public Chromosome next() {
				Chromosome next = population.get(index);
				index++;
				return next;
			}

			@Override
			public void remove() {
				// not allowed				
			}
			
		};
	}
}