Package org.apache.commons.math.linear
Class AbstractRealVector.SparseEntryIterator
java.lang.Object
org.apache.commons.math.linear.AbstractRealVector.SparseEntryIterator
- All Implemented Interfaces:
Iterator<RealVector.Entry>
- Enclosing class:
- AbstractRealVector
protected class AbstractRealVector.SparseEntryIterator
extends Object
implements Iterator<RealVector.Entry>
This class should rare be used, but is here to provide
a default implementation of sparseIterator(), which is implemented
by walking over the entries, skipping those whose values are the default one.
Concrete subclasses which are SparseVector implementations should
make their own sparse iterator, not use this one.
This implementation might be useful for ArrayRealVector, when expensive
operations which preserve the default value are to be done on the entries,
and the fraction of non-default values is small (i.e. someone took a
SparseVector, and passed it into the copy-constructor of ArrayRealVector)
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Constructor Details
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SparseEntryIterator
protected SparseEntryIterator()Simple constructor.
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Method Details
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advance
Advance an entry up to the next nonzero one.- Parameters:
e
- entry to advance
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hasNext
public boolean hasNext()- Specified by:
hasNext
in interfaceIterator<RealVector.Entry>
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next
- Specified by:
next
in interfaceIterator<RealVector.Entry>
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remove
public void remove()- Specified by:
remove
in interfaceIterator<RealVector.Entry>
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