CrossoverPermutationOnePoint

java.lang.Object
- org.opt4j.operator.crossover.CrossoverPermutationOnePoint

All Implemented Interfaces:

Operator<PermutationGenotype<?>>, Crossover<PermutationGenotype<?>>, CrossoverPermutation

Direct Known Subclasses:

CrossoverPermutationDefault
```
public class CrossoverPermutationOnePoint
extends Object
implements CrossoverPermutation
```
Crossover for the PermutationGenotype.

This operator takes sublist of the first permutation from the beginning to a random cut point and fills the remaining elements from the second permutation.

Given two permutations
1 2 3 4 5 6 7 8 and 8 7 6 5 4 3 2 1.
This results, for instance, in
1 2 3 4 5 8 7 6 or 1 2 8 7 6 5 4 3.

Additionally, a rotation value defines if the initial permutation are randomly rotated. With the rotation possible results would be
4 5 6 8 7 3 2 1 and 7 8 1 2 4 3 6 5.

Field Summary

Fields
Modifier and Type Field Description

protected Random random

protected boolean rotation

Constructor Summary

Constructors
Constructor Description

CrossoverPermutationOnePoint(Rand random, boolean rotation)
Constructs a new CrossoverPermutationOnePoint.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Pair<PermutationGenotype<?>>`	`crossover(PermutationGenotype<?> p1, PermutationGenotype<?> p2)`	Performs a crossover for two `Genotype` parents.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - random
```
protected final Random random
```
  - rotation
```
protected final boolean rotation
```
- Constructor Detail
  - CrossoverPermutationOnePoint
```
@Inject
public CrossoverPermutationOnePoint(Rand random,
                                    boolean rotation)
```
    Constructs a new CrossoverPermutationOnePoint.
    
    Parameters:
    
    random - the random number generator
    
    rotation - use rotation
- Method Detail
  - crossover
```
public Pair<PermutationGenotype<?>> crossover(PermutationGenotype<?> p1,
                                              PermutationGenotype<?> p2)
```
    Description copied from interface: Crossover
    
    Performs a crossover for two Genotype parents. The resulting pair of Genotype offspring is returned.
    
    Specified by:
    
    crossover in interface Crossover<PermutationGenotype<?>>
    
    Parameters:
    
    p1 - The first parent genotype for the crossover
    
    p2 - The second parents genotype for the crossover
    
    Returns:
    
    The resulting pair of offspring genotypes