com.badlogic.gdx.utils
Class IntArray

java.lang.Object
  com.badlogic.gdx.utils.IntArray

public class IntArray
extends Object

A resizable, ordered or unordered int array. Avoids the boxing that occurs with ArrayList. If unordered, this class avoids a memory copy when removing elements (the last element is moved to the removed element's position).

Author:

Nathan Sweet

Field Summary

int[]	items
boolean	ordered
int	size

Constructor Summary

IntArray()
Creates an ordered array with a capacity of 16.

IntArray(boolean ordered, int capacity)

IntArray(boolean ordered, int[] array, int startIndex, int count)
Creates a new array containing the elements in the specified array.

IntArray(int capacity)
Creates an ordered array with the specified capacity.

IntArray(int[] array)
Creates a new ordered array containing the elements in the specified array.

IntArray(IntArray array)
Creates a new array containing the elements in the specific array.

Method Summary

void	add(int value)
void	addAll(int[] array)
void	addAll(int[] array, int offset, int length)
void	addAll(IntArray array)
void	addAll(IntArray array, int offset, int length)
void	clear()
boolean	contains(int value)
int[]	ensureCapacity(int additionalCapacity) Increases the size of the backing array to acommodate the specified number of additional items.
boolean	equals(Object object)
int	first() Returns the first item.
int	get(int index)
void	incr(int index, int value)
int	indexOf(int value)
void	insert(int index, int value)
int	lastIndexOf(int value)
int	peek() Returns the last item.
int	pop() Removes and returns the last item.
int	random() Returns a random item from the array, or zero if the array is empty.
boolean	removeAll(IntArray array) Removes from this array all of elements contained in the specified array.
int	removeIndex(int index) Removes and returns the item at the specified index.
boolean	removeValue(int value)
void	reverse()
void	set(int index, int value)
void	shrink() Reduces the size of the backing array to the size of the actual items.
void	shuffle()
void	sort()
void	swap(int first, int second)
int[]	toArray()
String	toString()
String	toString(String separator)
void	truncate(int newSize) Reduces the size of the array to the specified size.

Methods inherited from class java.lang.Object

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

Field Detail

items

public int[] items

size

public int size

ordered

public boolean ordered

Constructor Detail

IntArray

public IntArray()

Creates an ordered array with a capacity of 16.

IntArray

public IntArray(int capacity)

Creates an ordered array with the specified capacity.

IntArray

public IntArray(boolean ordered,
                int capacity)

Parameters:

ordered - If false, methods that remove elements may change the order of other elements in the array, which avoids a memory copy.

capacity - Any elements added beyond this will cause the backing array to be grown.

IntArray

public IntArray(IntArray array)

Creates a new array containing the elements in the specific array. The new array will be ordered if the specific array is ordered. The capacity is set to the number of elements, so any subsequent elements added will cause the backing array to be grown.

IntArray

public IntArray(int[] array)

Creates a new ordered array containing the elements in the specified array. The capacity is set to the number of elements, so any subsequent elements added will cause the backing array to be grown.

IntArray

public IntArray(boolean ordered,
                int[] array,
                int startIndex,
                int count)

Creates a new array containing the elements in the specified array. The capacity is set to the number of elements, so any subsequent elements added will cause the backing array to be grown.

Parameters:

ordered - If false, methods that remove elements may change the order of other elements in the array, which avoids a memory copy.

Method Detail

add

public void add(int value)

addAll

public void addAll(IntArray array)

addAll

public void addAll(IntArray array,
                   int offset,
                   int length)

addAll

public void addAll(int[] array)

addAll

public void addAll(int[] array,
                   int offset,
                   int length)

get

public int get(int index)

set

public void set(int index,
                int value)

incr

public void incr(int index,
                 int value)

insert

public void insert(int index,
                   int value)

swap

public void swap(int first,
                 int second)

contains

public boolean contains(int value)

indexOf

public int indexOf(int value)

lastIndexOf

public int lastIndexOf(int value)

removeValue

public boolean removeValue(int value)

removeIndex

public int removeIndex(int index)

Removes and returns the item at the specified index.

removeAll

public boolean removeAll(IntArray array)

Removes from this array all of elements contained in the specified array.

Returns:

true if this array was modified.

pop

public int pop()

Removes and returns the last item.

peek

public int peek()

Returns the last item.

first

public int first()

Returns the first item.

clear

public void clear()

shrink

public void shrink()

Reduces the size of the backing array to the size of the actual items. This is useful to release memory when many items have been removed, or if it is known that more items will not be added.

ensureCapacity

public int[] ensureCapacity(int additionalCapacity)

Increases the size of the backing array to acommodate the specified number of additional items. Useful before adding many items to avoid multiple backing array resizes.

Returns:

items

sort

public void sort()

reverse

public void reverse()

shuffle

public void shuffle()

truncate

public void truncate(int newSize)

Reduces the size of the array to the specified size. If the array is already smaller than the specified size, no action is taken.

random

public int random()

Returns a random item from the array, or zero if the array is empty.

toArray

public int[] toArray()

equals

public boolean equals(Object object)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

toString

public String toString(String separator)