public class Individual {

static int defaultGeneLength = 64;

private byte[] genes;

// Cache

private int fitness = 0;

// Create a random individual

public Individual() {

genes = new byte[defaultGeneLength];

for (int i = 0; i < size(); i++) {

byte gene = (byte) Math.round(Math.random());

genes[i] = gene;

}

}

// Create a local individual

public Individual(String chromosome) {

defaultGeneLength = chromosome.length();

genes = new byte[defaultGeneLength];

for (int i = 0; i < chromosome.length(); i++) {

byte gene = Byte.parseByte(Character.toString(chromosome.charAt(i)));

genes[i] = gene;

}

}

// Create a local individual

public Individual(int chromosomeSize) {

defaultGeneLength = chromosomeSize;

genes = new byte[defaultGeneLength];

for (int i = 0; i < size(); i++) {

byte gene = (byte) Math.round(Math.random());

genes[i] = gene;

}

}

/* Getters and setters */

// Use this if you want to create individuals with different gene lengths

public static void setDefaultGeneLength(int length) {

defaultGeneLength = length;

}

public byte getGene(int index) {

return genes[index];

}

public void setGene(int index, byte value) {

genes[index] = value;

fitness = 0;

}

/* Public methods */

public int size() {

return genes.length;

}

public int getFitness() {

if (fitness == 0) {

fitness = Hash.getFitness(this);

}

return fitness;

}

@Override

public String toString() {

String geneString = "";

for (int i = 0; i < size(); i++) {

geneString += getGene(i);

}

return geneString;

}

}