weka.core.matrix

Class IntVector

java.lang.Object

weka.core.matrix.IntVector

All Implemented Interfaces:

java.lang.Cloneable, RevisionHandler

public class IntVector
extends java.lang.Object
implements java.lang.Cloneable, RevisionHandler

A vector specialized on integers.

Version:

$Revision: 1.4 $

Author:

Yong Wang

Constructor Summary

Constructors

Constructor and Description
IntVector() Constructs a null vector.
IntVector(int n) Constructs an n-vector of zeros.
IntVector(int[] v) Constructs a vector given an int array
IntVector(int n, int s) Constructs an n-vector of a constant

Method Summary

Modifier and Type	Method and Description
int	capacity() Returns the capacity of the vector
java.lang.Object	clone() Clones the IntVector object.
IntVector	copy() Makes a deep copy of the vector
int	get(int i) Gets the value of an element.
int[]	getArray() Access the internal one-dimensional array.
int[]	getArrayCopy() Returns a copy of the internal one-dimensional array.
java.lang.String	getRevision() Returns the revision string.
boolean	isEmpty() Returns true if the vector is empty
static void	main(java.lang.String[] args) Tests the IntVector class
static IntVector	seq(int i0, int i1) Generates an IntVector that stores all integers inclusively between two integers.
void	set(int s) Sets the value of an element.
void	set(int i, int s) Sets a single element.
void	set(int i0, int i1, int[] v, int j0) Sets the values of elements from an int array.
void	set(int i0, int i1, IntVector v, int j0) Sets the values of elements from another IntVector.
void	set(IntVector v) Sets the values of elements from another IntVector.
void	setCapacity(int capacity) Sets the capacity of the vector
void	setSize(int size) Sets the size of the vector.
void	shift(int i, int j) Shifts an element to another position.
void	shiftToEnd(int j) Shifts an element to the end of the vector.
int	size() Gets the size of the vector.
void	sort() Sorts the elements in place
IntVector	subvector(int i0, int i1) Returns a subvector.
IntVector	subvector(IntVector index) Returns a subvector as indexed by an IntVector.
void	swap(int i, int j) Swaps the values stored at i and j
java.lang.String	toString() Converts the IntVecor to a string
java.lang.String	toString(int digits, boolean trailing) Convert the IntVecor to a string

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

IntVector

public IntVector()

Constructs a null vector.

IntVector

public IntVector(int n)

Constructs an n-vector of zeros.

Parameters:

n - Length.

IntVector

public IntVector(int n,
                 int s)

Constructs an n-vector of a constant

Parameters:

n - Length.

IntVector

public IntVector(int[] v)

Constructs a vector given an int array

Parameters:

v - the int array

Method Detail

size

public int size()

Gets the size of the vector.

Returns:

Size.

setSize

public void setSize(int size)

Sets the size of the vector. The provided size can't be greater than the capacity of the vector.

Parameters:

size - the new Size.

set

public void set(int s)

Sets the value of an element.

Parameters:

s - the value for the element

set

public void set(int i0,
                int i1,
                int[] v,
                int j0)

Sets the values of elements from an int array.

Parameters:

i0 - the index of the first element

i1 - the index of the last element

v - the int array that stores the values

j0 - the index of the first element in the int array

set

public void set(int i0,
                int i1,
                IntVector v,
                int j0)

Sets the values of elements from another IntVector.

Parameters:

i0 - the index of the first element

i1 - the index of the last element

v - the IntVector that stores the values

j0 - the index of the first element in the IntVector

set

public void set(IntVector v)

Sets the values of elements from another IntVector.

Parameters:

v - the IntVector that stores the values

seq

public static IntVector seq(int i0,
                            int i1)

Generates an IntVector that stores all integers inclusively between two integers.

Parameters:

i0 - the first integer

i1 - the second integer

getArray

public int[] getArray()

Access the internal one-dimensional array.

Returns:

Pointer to the one-dimensional array of vector elements.

sort

public void sort()

Sorts the elements in place

getArrayCopy

public int[] getArrayCopy()

Returns a copy of the internal one-dimensional array.

Returns:

One-dimensional array copy of vector elements.

capacity

public int capacity()

Returns the capacity of the vector

setCapacity

public void setCapacity(int capacity)

Sets the capacity of the vector

Parameters:

capacity - the new capacity of the vector

set

public void set(int i,
                int s)

Sets a single element.

Parameters:

i - the index of the element

s - the new value

get

public int get(int i)

Gets the value of an element.

Parameters:

i - the index of the element

Returns:

the value of the element

copy

public IntVector copy()

Makes a deep copy of the vector

clone

public java.lang.Object clone()

Clones the IntVector object.

Overrides:

clone in class java.lang.Object

subvector

public IntVector subvector(int i0,
                           int i1)

Returns a subvector.

Parameters:

i0 - the index of the first element

i1 - the index of the last element

Returns:

the subvector

subvector

public IntVector subvector(IntVector index)

Returns a subvector as indexed by an IntVector.

Parameters:

index - the index

Returns:

the subvector

swap

public void swap(int i,
                 int j)

Swaps the values stored at i and j

Parameters:

i - the index i

j - the index j

shift

public void shift(int i,
                  int j)

Shifts an element to another position. Elements between them are shifted one position left.

Parameters:

i - the index of the element

j - the index of the new position

shiftToEnd

public void shiftToEnd(int j)

Shifts an element to the end of the vector. Elements between them are shifted one position left.

Parameters:

j - the index of the element

isEmpty

public boolean isEmpty()

Returns true if the vector is empty

toString

public java.lang.String toString()

Converts the IntVecor to a string

Overrides:

toString in class java.lang.Object

toString

public java.lang.String toString(int digits,
                                 boolean trailing)

Convert the IntVecor to a string

Parameters:

digits - number of digits to be shown

trailing - true if trailing zeros are to be shown

getRevision

public java.lang.String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Returns:

the revision

main

public static void main(java.lang.String[] args)

Tests the IntVector class