/// <summary>
/// Do Crossover between 2 Chromosome's
/// </summary>
/// <param name="Dad">Father chromosome for product Children Chromosome</param>
/// <param name="Mum">Mather chromosome for product Children Chromosome</param>
/// <param name="rand">random reproducer</param>
/// <returns></returns>
public static Chromosome crossover(this Chromosome Dad, Chromosome Mum, Random rand)
{
// for check written or duplicated
bool write = false;
ArrayList duplicate = new ArrayList();
//
// define offspring chromosome length
Chromosome offspring = new Chromosome(Dad.Tour.Length);
//
// Greedy Crossover Algorithm
//
// _ _ ?
// CDEFABG Dad <-----E <-- Loop Vector to Left
//
// _ ? _
// GFADCEB Mum --> E-----> Loop Vector to Right
//
// Offspring (New Chromosome) =
// Step '1': E
// Step '2': DEB
// Step '3': CDEBG
// Step '4': CDEBGF
// Step '5': CDEBGFA
// _
// select point, in example: E
int index_dad = rand.Next(0, Dad.Tour.Length - 1);
int index_mum = Mum.Tour.IndexOf(Dad.Tour[index_dad]);
//
// push selected info in offspring array
push_info(offspring.Tour, Dad.Tour[index_dad], "Center", duplicate, out write);
//
// read Left of Dad chromosome & Right of Mum chromosome
index_dad--; // left loop <----
index_mum++; // right loop ---->
//
// -1 because selected point info was saved
int child_lenght = offspring.Tour.Length - 1; // number of free space or '-1'
while (child_lenght > 0)
{
// check range of index number
if (index_dad < 0) index_dad = Dad.Tour.Length - 1;
if (index_mum >= Mum.Tour.Length) index_mum = 0;
write = false;
offspring.Tour.push_info(Dad.Tour[index_dad], "Left", duplicate, out write);
if (write) child_lenght--;
write = false;
offspring.Tour.push_info(Mum.Tour[index_mum], "Right", duplicate, out write);
if (write) child_lenght--;
//
// REDUCTION
index_dad--;
index_mum++;
}
return offspring;
}
/// <summary>
/// Do Crossover between 2 Chromosome's
/// </summary>
/// <param name="Dad">Father chromosome for product Children Chromosome</param>
/// <param name="Mum">Mather chromosome for product Children Chromosome</param>
/// <param name="rand">random reproducer</param>
/// <returns></returns>
public static Chromosome crossover(this Chromosome Dad, Chromosome Mum, Random rand)
{
// for check written or duplicated
bool write = false;
ArrayList duplicate = new ArrayList();
//
// define offspring chromosome length
Chromosome offspring = new Chromosome(Dad.Tour.Length);
//
// Greedy Crossover Algorithm
//
// _ _ ?
// CDEFABG Dad <-----E <-- Loop Vector to Left
//
// _ ? _
// GFADCEB Mum --> E-----> Loop Vector to Right
//
// Offspring (New Chromosome) =
// Step '1': E
// Step '2': DEB
// Step '3': CDEBG
// Step '4': CDEBGF
// Step '5': CDEBGFA
// _
// select point, in example: E
int index_dad = rand.Next(0, Dad.Tour.Length - 1);
int index_mum = Mum.Tour.IndexOf(Dad.Tour[index_dad]);
//
// push selected info in offspring array
push_info(offspring.Tour, Dad.Tour[index_dad], "Center", duplicate, out write);
//
// read Left of Dad chromosome & Right of Mum chromosome
index_dad--; // left loop <----
index_mum++; // right loop ---->
//
// -1 because selected point info was saved
int child_lenght = offspring.Tour.Length - 1; // number of free space or '-1'
while (child_lenght > 0)
{
// check range of index number
if (index_dad < 0)
{
index_dad = Dad.Tour.Length - 1;
}
if (index_mum >= Mum.Tour.Length)
{
index_mum = 0;
}
write = false;
offspring.Tour.push_info(Dad.Tour[index_dad], "Left", duplicate, out write);
if (write)
{
child_lenght--;
}
write = false;
offspring.Tour.push_info(Mum.Tour[index_mum], "Right", duplicate, out write);
if (write)
{
child_lenght--;
}
//
// REDUCTION
index_dad--;
index_mum++;
}
return(offspring);
}
private void Population(Random rand)
{
// create first population by Npop = 500;
pop = new Chromosome[Npop];
int[] RandNum = new int[counter_City];
int[] RandNumber = new int[counter_City];
int buffer = counter_City - 1;
for (int l = 0; l < counter_City; l++)
RandNumber[l] = l;
for (int i = 0; i < Npop; i++)
{
RandNum = RandNumber;
buffer = counter_City - 1;
pop[i] = new Chromosome(counter_City);
int b;
int buffer2;
for (int j = 0; j < counter_City; j++)
{
b = rand.Next(0, buffer);
pop[i].Tour[j] = RandNum[b];
buffer2 = RandNum[buffer];
RandNum[buffer] = RandNum[b];
RandNum[b] = buffer2;
buffer--;
}
}
}
