Package org.apache.commons.math4.linear

Class RealVector.SparseEntryIterator

java.lang.Object
org.apache.commons.math4.linear.RealVector.SparseEntryIterator
All Implemented Interfaces:
java.util.Iterator<RealVector.Entry>
Enclosing class:
RealVector
protected class RealVector.SparseEntryIterator
extends java.lang.Object
implements java.util.Iterator<RealVector.Entry>
This class should rarely be used, but is here to provide a default implementation of sparseIterator(), which is implemented by walking over the entries, skipping those that are zero. Concrete subclasses which are SparseVector implementations should make their own sparse iterator, rather than using 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)

  • Constructor Summary

    Constructors 
    Modifier Constructor Description
    protected SparseEntryIterator()
    Simple constructor.

  • Method Summary

    Modifier and Type Method Description
    protected void advance​(RealVector.Entry e)
    Advance an entry up to the next nonzero one.
    boolean hasNext()
    RealVector.Entry next()
    void remove()

    Methods inherited from class java.lang.Object

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

    Methods inherited from interface java.util.Iterator

    forEachRemaining