AbstractRealVector.SparseEntryIterator (Commons Math 2.2 API)

java.lang.Object
- org.apache.commons.math.linear.AbstractRealVector.SparseEntryIterator

All Implemented Interfaces:

java.util.Iterator<RealVector.Entry>

Enclosing class:

AbstractRealVector
```
protected class AbstractRealVector.SparseEntryIterator
extends java.lang.Object
implements java.util.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)

Constructor Summary

Constructors
Modifier Constructor Description

protected SparseEntryIterator()
Simple constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`advance(AbstractRealVector.EntryImpl 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

- Constructor Detail
  - SparseEntryIterator
```
protected SparseEntryIterator()
```
    Simple constructor.
- Method Detail
  - advance
```
protected void advance(AbstractRealVector.EntryImpl e)
```
    Advance an entry up to the next nonzero one.
    
    Parameters:
    
    e - entry to advance
  - hasNext
```
public boolean hasNext()
```
    Specified by:
    
    hasNext in interface java.util.Iterator<RealVector.Entry>
  - next
```
public RealVector.Entry next()
```
    Specified by:
    
    next in interface java.util.Iterator<RealVector.Entry>
  - remove
```
public void remove()
```
    Specified by:
    
    remove in interface java.util.Iterator<RealVector.Entry>