de.torstennahm.integrate.sparse.index
Class WeightedIndexGenerator

java.lang.Object
  de.torstennahm.integrate.sparse.index.WeightedIndexGenerator

All Implemented Interfaces:

de.torstennahm.series.Series<Index>

public class WeightedIndexGenerator
extends java.lang.Object
implements de.torstennahm.series.Series<Index>

Iterates over all indices with a given dimension, or with infinite dimension. All indices are returned exactly once. The exact order in which indices are provided is not specified. However, indices are returned so that for each index provided, all smaller indices (with regard to the canonical partial ordering of indices) have been returned before it. In addition, for finite dimension, it is also guaranteed that the length of the returned indices (that is, the sum of their components) increases monotonously. This is not possible for infinite dimension.

This class is not thread-safe.

Author:

Torsten Nahm

Nested Class Summary

static interface

WeightedIndexGenerator.WeightFunction

Constructor Summary

WeightedIndexGenerator()

WeightedIndexGenerator(double[] weights)

WeightedIndexGenerator(WeightedIndexGenerator.WeightFunction weightFunction, int dimension)

Method Summary

boolean	hasNext()
Index	next()

Methods inherited from class java.lang.Object

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

Constructor Detail

WeightedIndexGenerator

public WeightedIndexGenerator()

WeightedIndexGenerator

public WeightedIndexGenerator(double[] weights)

WeightedIndexGenerator

public WeightedIndexGenerator(WeightedIndexGenerator.WeightFunction weightFunction,
                              int dimension)

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface de.torstennahm.series.Series<Index>

next

public Index next()

Specified by:

next in interface de.torstennahm.series.Series<Index>