com.levigo.util.base.collections
Class Collections

java.lang.Object
  com.levigo.util.base.collections.Collections

public class Collections
extends Object

Method Summary

static <C> List<List<C>>	clusterize(List<C> elements, Comparator<C> comp) A very simple clusterizer which traverses the given elements in order.
static <E> List<E>	flatten(Collection<? extends Collection<E>> src)
static <E> void	flatten(Collection<? extends Collection<E>> src, Collection<E> dst)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

clusterize

public static <C> List<List<C>> clusterize(List<C> elements,
                                           Comparator<C> comp)

A very simple clusterizer which traverses the given elements in order. The first element becomes the nucleus of a new cluster. The following elements are clustered with the nucleus as long as the given comparator signals equality of the given element and the nucleus as per Comparator.compare(Object, Object). Otherwise a new cluster is started.

Parameters:

elements - the elements to cluster

comp - the comparator used to compare nucleus and element

Returns:

a list of clusters

flatten

public static <E> List<E> flatten(Collection<? extends Collection<E>> src)

flatten

public static <E> void flatten(Collection<? extends Collection<E>> src,
                               Collection<E> dst)