java.lang.Object
- weka.core.FastVector

All Implemented Interfaces:

java.io.Serializable, Copyable, RevisionHandler

Direct Known Subclasses:

BestFirst.LinkedList2, LFSMethods.LinkedList2
```
public class FastVector
extends java.lang.Object
implements Copyable, java.io.Serializable, RevisionHandler
```
Implements a fast vector class without synchronized methods. Replaces java.util.Vector. (Synchronized methods tend to be slow.)

Version:

$Revision: 1.16 $

Author:

Eibe Frank (eibe@cs.waikato.ac.nz)

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class Description

class FastVector.FastVectorEnumeration
Class for enumerating the vector's elements.

Constructor Summary

Constructors
Constructor Description

FastVector()
Constructs an empty vector with initial capacity zero.

FastVector(int capacity)
Constructs a vector with the given capacity.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addElement(java.lang.Object element)`	Adds an element to this vector.
`void`	`appendElements(FastVector toAppend)`	Appends all elements of the supplied vector to this vector.
`int`	`capacity()`	Returns the capacity of the vector.
`boolean`	`contains(java.lang.Object o)`	added by akibriya
`java.lang.Object`	`copy()`	Produces a shallow copy of this vector.
`java.lang.Object`	`copyElements()`	Clones the vector and shallow copies all its elements.
`java.lang.Object`	`elementAt(int index)`	Returns the element at the given position.
`java.util.Enumeration`	`elements()`	Returns an enumeration of this vector.
`java.util.Enumeration`	`elements(int index)`	Returns an enumeration of this vector, skipping the element with the given index.
`java.lang.Object`	`firstElement()`	Returns the first element of the vector.
`java.lang.String`	`getRevision()`	Returns the revision string.
`int`	`indexOf(java.lang.Object element)`	Searches for the first occurence of the given argument, testing for equality using the equals method.
`void`	`insertElementAt(java.lang.Object element, int index)`	Inserts an element at the given position.
`java.lang.Object`	`lastElement()`	Returns the last element of the vector.
`void`	`removeAllElements()`	Removes all components from this vector and sets its size to zero.
`void`	`removeElementAt(int index)`	Deletes an element from this vector.
`void`	`setCapacity(int capacity)`	Sets the vector's capacity to the given value.
`void`	`setElementAt(java.lang.Object element, int index)`	Sets the element at the given index.
`int`	`size()`	Returns the vector's current size.
`void`	`swap(int first, int second)`	Swaps two elements in the vector.
`java.lang.Object[]`	`toArray()`	Returns all the elements of this vector as an array
`void`	`trimToSize()`	Sets the vector's capacity to its size.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - FastVector
```
public FastVector()
```
    Constructs an empty vector with initial capacity zero.
  - FastVector
```
public FastVector(int capacity)
```
    Constructs a vector with the given capacity.
    
    Parameters:
    
    capacity - the vector's initial capacity
- Method Detail
  - addElement
```
public final void addElement(java.lang.Object element)
```
    Adds an element to this vector. Increases its capacity if its not large enough.
    
    Parameters:
    
    element - the element to add
  - capacity
```
public final int capacity()
```
    Returns the capacity of the vector.
    
    Returns:
    
    the capacity of the vector
  - copy
```
public final java.lang.Object copy()
```
    Produces a shallow copy of this vector.
    
    Specified by:
    
    copy in interface Copyable
    
    Returns:
    
    the new vector
  - copyElements
```
public final java.lang.Object copyElements()
```
    Clones the vector and shallow copies all its elements. The elements have to implement the Copyable interface.
    
    Returns:
    
    the new vector
  - elementAt
```
public final java.lang.Object elementAt(int index)
```
    Returns the element at the given position.
    
    Parameters:
    
    index - the element's index
    
    Returns:
    
    the element with the given index
  - elements
```
public final java.util.Enumeration elements()
```
    Returns an enumeration of this vector.
    
    Returns:
    
    an enumeration of this vector
  - elements
```
public final java.util.Enumeration elements(int index)
```
    Returns an enumeration of this vector, skipping the element with the given index.
    
    Parameters:
    
    index - the element to skip
    
    Returns:
    
    an enumeration of this vector
  - contains
```
public boolean contains(java.lang.Object o)
```
    added by akibriya
  - firstElement
```
public final java.lang.Object firstElement()
```
    Returns the first element of the vector.
    
    Returns:
    
    the first element of the vector
  - indexOf
```
public final int indexOf(java.lang.Object element)
```
    Searches for the first occurence of the given argument, testing for equality using the equals method.
    
    Parameters:
    
    element - the element to be found
    
    Returns:
    
    the index of the first occurrence of the argument in this vector; returns -1 if the object is not found
  - insertElementAt
```
public final void insertElementAt(java.lang.Object element,
                                  int index)
```
    Inserts an element at the given position.
    
    Parameters:
    
    element - the element to be inserted
    
    index - the element's index
  - lastElement
```
public final java.lang.Object lastElement()
```
    Returns the last element of the vector.
    
    Returns:
    
    the last element of the vector
  - removeElementAt
```
public final void removeElementAt(int index)
```
    Deletes an element from this vector.
    
    Parameters:
    
    index - the index of the element to be deleted
  - removeAllElements
```
public final void removeAllElements()
```
    Removes all components from this vector and sets its size to zero.
  - appendElements
```
public final void appendElements(FastVector toAppend)
```
    Appends all elements of the supplied vector to this vector.
    
    Parameters:
    
    toAppend - the FastVector containing elements to append.
  - toArray
```
public final java.lang.Object[] toArray()
```
    Returns all the elements of this vector as an array
    
    Returns:
    
    an array containing all the elements of this vector
  - setCapacity
```
public final void setCapacity(int capacity)
```
    Sets the vector's capacity to the given value.
    
    Parameters:
    
    capacity - the new capacity
  - setElementAt
```
public final void setElementAt(java.lang.Object element,
                               int index)
```
    Sets the element at the given index.
    
    Parameters:
    
    element - the element to be put into the vector
    
    index - the index at which the element is to be placed
  - size
```
public final int size()
```
    Returns the vector's current size.
    
    Returns:
    
    the vector's current size
  - swap
```
public final void swap(int first,
                       int second)
```
    Swaps two elements in the vector.
    
    Parameters:
    
    first - index of the first element
    
    second - index of the second element
  - trimToSize
```
public final void trimToSize()
```
    Sets the vector's capacity to its size.
  - getRevision
```
public java.lang.String getRevision()
```
    Returns the revision string.
    
    Specified by:
    
    getRevision in interface RevisionHandler
    
    Returns:
    
    the revision

Constructor	Description
`FastVector()`	Constructs an empty vector with initial capacity zero.
`FastVector(int capacity)`	Constructs a vector with the given capacity.

Class FastVector

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

FastVector

FastVector

Method Detail

addElement

capacity

copy

copyElements

elementAt

elements

elements

contains

firstElement

indexOf

insertElementAt

lastElement

removeElementAt

removeAllElements

appendElements

toArray

setCapacity

setElementAt

size

swap

trimToSize

getRevision