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## org.apache.commons.math3.genetics
Class OnePointCrossover<T>

    java.lang.Object
      org.apache.commons.math3.genetics.OnePointCrossover<T>

Type Parameters:
  `T` - generic type of the `AbstractListChromosome`s for crossover

All Implemented Interfaces:
  CrossoverPolicy

    public class OnePointCrossover<T>

extends Object
implements CrossoverPolicy

One point crossover policy. A random crossover point is selected and the first part from each parent is copied to the corresponding child, and the second parts are copied crosswise. Example:

     -C- denotes a crossover point
                       -C-                                 -C-
     p1 = (1 0 1 0 0 1  | 0 1 1)    X    p2 = (0 1 1 0 1 0  | 1 1 1)
          \------------/ \-----/              \------------/ \-----/
                ||         (*)                       ||        (**)
                VV         (**)                      VV        (*)
          /------------\ /-----\              /------------\ /-----\
     c1 = (1 0 1 0 0 1  | 1 1 1)    X    c2 = (0 1 1 0 1 0  | 0 1 1)

This policy works only on `AbstractListChromosome`, and therefore it is parameterized by T. Moreover, the chromosomes must have same lengths.

Since:
  2.0
Version:
  $Id: OnePointCrossover.java 1416643 2012-12-03 19:37:14Z tn $

Constructor Summary
`OnePointCrossover()`

Method Summary
`ChromosomePair` | `crossover(Chromosome first, Chromosome second)` Performs one point crossover.

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

Constructor Detail

### OnePointCrossover

    public OnePointCrossover()

Method Detail

### crossover

    public ChromosomePair crossover(Chromosome first,
                                    Chromosome second)
                             throws DimensionMismatchException,
                                    MathIllegalArgumentException

  Performs one point crossover. A random crossover point is selected and the first part from each parent is copied to the corresponding child, and the second parts are copied crosswise. Example:

       -C- denotes a crossover point
                         -C-                                 -C-
       p1 = (1 0 1 0 0 1  | 0 1 1)    X    p2 = (0 1 1 0 1 0  | 1 1 1)
            \------------/ \-----/              \------------/ \-----/
                  ||         (*)                       ||        (**)
                  VV         (**)                      VV        (*)
            /------------\ /-----\              /------------\ /-----\
       c1 = (1 0 1 0 0 1  | 1 1 1)    X    c2 = (0 1 1 0 1 0  | 0 1 1)

  Specified by:
    `crossover` in interface `CrossoverPolicy`
  Parameters:
    `first` - first parent (p1)
    `second` - second parent (p2)
  Returns:
    pair of two children (c1,c2)
  Throws:
    `MathIllegalArgumentException` - iff one of the chromosomes is not an instance of `AbstractListChromosome`
    `DimensionMismatchException` - if the length of the two chromosomes is different

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