Package org.apache.commons.math4.linear

Class 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