weka.core.neighboursearch.covertrees

Class Stack<T>

java.lang.Object

weka.core.neighboursearch.covertrees.Stack<T>

Type Parameters:

T - The type of elements to be stored in the stack.

All Implemented Interfaces:

Serializable, RevisionHandler

public class Stack<T>
extends Object
implements Serializable, RevisionHandler

Class implementing a stack.

Version:

$Revision: 8034 $

Author:

Alina Beygelzimer (original C++ code), Sham Kakade (original C++ code), John Langford (original C++ code), Ashraf M. Kibriya (amk14[at-the-rate]cs[dot]waikato[dot]ac[dot]nz) (Java port)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
ArrayList<T>	elements The elements inside the stack.
int	length The number of elements in the stack.

Constructor Summary

Constructors

Constructor and Description
Stack() Constructor.
Stack(int capacity) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	addAll(Collection<? extends T> c) Adds all the given elements in the stack.
void	clear() Removes all the elements from the stack.
T	element(int i) Returns the ith element in the stack.
String	getRevision() Returns the revision string.
T	last() Returns the last element in the stack.
T	pop() Pops (removes) the first (last added) element in the stack.
void	push(Stack<T> v, T new_ele) Pushes the given element onto the given stack.
void	push(T new_ele) Pushes the given element to the stack.
void	replaceAllBy(Stack<T> s) Replace all elements in the stack with the elements of another given stack.
void	set(int i, T e) Sets the ith element in the stack.
List	subList(int beginIdx, int uptoLength) Returns a sublist of the elements in the stack.

Methods inherited from class java.lang.Object

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

Field Detail

length

public int length

The number of elements in the stack.

elements

public ArrayList<T> elements

The elements inside the stack.

Constructor Detail

Stack

public Stack()

Constructor.

Stack

public Stack(int capacity)

Constructor.

Parameters:

capacity - The initial capacity of the stack.

Method Detail

last

public T last()

Returns the last element in the stack.

Returns:

The last element.

element

public T element(int i)

Returns the ith element in the stack.

Parameters:

i - The index of the element to return.

Returns:

The ith element.

set

public void set(int i,
       T e)

Sets the ith element in the stack.

Parameters:

i - The index at which the element is to be inserted.

e - The element to insert.

subList

public List subList(int beginIdx,
           int uptoLength)

Returns a sublist of the elements in the stack.

Parameters:

beginIdx - The start index of the sublist.

uptoLength - The length of the sublist.

Returns:

The sublist starting from beginIdx and of length uptoLength.

clear

public void clear()

Removes all the elements from the stack.

addAll

public void addAll(Collection<? extends T> c)

Adds all the given elements in the stack.

Parameters:

c - The collection of elements to add in the stack.

replaceAllBy

public void replaceAllBy(Stack<T> s)

Replace all elements in the stack with the elements of another given stack. It first removes all the elements currently in the stack, and then adds all the elements of the provided stack.

Parameters:

s - The stack whose elements should be put in this stack.

pop

public T pop()

Pops (removes) the first (last added) element in the stack.

Returns:

The poped element.

push

public void push(T new_ele)

Pushes the given element to the stack.

Parameters:

new_ele - The element to be pushed to the stack.

push

public void push(Stack<T> v,
        T new_ele)

Pushes the given element onto the given stack.

Parameters:

v - The stack onto push the element.

new_ele - The element to push.

getRevision

public String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Returns:

the revision