public class DoubleBigArrayBigList extends AbstractDoubleBigList implements java.util.RandomAccess, java.lang.Cloneable, java.io.Serializable
This class implements a lightweight, fast, open, optimized,
reuse-oriented version of big-array-based big lists. Instances of this class
represent a big list with a big array that is enlarged as needed when new entries
are created (by increasing its current length by 50%), but is
never made smaller (even on a clear()
). A family of
trimming methods lets you control the size of the
backing big array; this is particularly useful if you reuse instances of this class.
Range checks are equivalent to those of java.util
's classes, but
they are delayed as much as possible. The backing big array is exposed by the
elements()
method.
This class implements the bulk methods removeElements()
,
addElements()
and getElements()
using
high-performance system calls (e.g., System.arraycopy()
) instead of
expensive loops.
ArrayList
,
Serialized FormAbstractDoubleBigList.DoubleRandomAccessSubList, AbstractDoubleBigList.DoubleSubList
Modifier and Type | Field and Description |
---|---|
static int |
DEFAULT_INITIAL_CAPACITY
The initial default capacity of a big-array big list.
|
Constructor and Description |
---|
DoubleBigArrayBigList()
Creates a new big-array big list with
DEFAULT_INITIAL_CAPACITY capacity. |
DoubleBigArrayBigList(double[][] a)
Creates a new big-array big list and fills it with the elements of a given big array.
|
DoubleBigArrayBigList(double[][] a,
long offset,
long length)
Creates a new big-array big list and fills it with the elements of a given big array.
|
DoubleBigArrayBigList(DoubleBigList l)
Creates a new big-array big list and fills it with a given type-specific list.
|
DoubleBigArrayBigList(DoubleCollection c)
Creates a new big-array big list and fills it with a given type-specific collection.
|
DoubleBigArrayBigList(DoubleIterator i)
Creates a new big-array big list and fills it with the elements returned by a type-specific iterator..
|
DoubleBigArrayBigList(java.util.Iterator<? extends java.lang.Double> i)
Creates a new big-array big list and fills it with the elements returned by an iterator..
|
DoubleBigArrayBigList(long capacity)
Creates a new big-array big list with given capacity.
|
Modifier and Type | Method and Description |
---|---|
boolean |
add(double k)
Ensures that this collection contains the specified element (optional operation).
|
void |
add(long index,
double k)
Inserts the specified element at the specified position in this type-specific big list (optional operation).
|
boolean |
addAll(long index,
DoubleBigList list)
Inserts all of the elements in the specified type-specific big list into this type-specific big list at the specified position (optional operation).
|
boolean |
addAll(long index,
DoubleCollection c)
Inserts all of the elements in the specified type-specific collection into this type-specific big list at the specified position (optional operation).
|
boolean |
addAll(long index,
DoubleList list)
Inserts all of the elements in the specified type-specific list into this type-specific big list at the specified position (optional operation).
|
void |
addElements(long index,
double[][] a,
long offset,
long length)
Adds elements to this type-specific list using optimized system calls.
|
void |
clear() |
DoubleBigArrayBigList |
clone() |
int |
compareTo(BigList<? extends java.lang.Double> l)
Compares this big list to another object.
|
int |
compareTo(DoubleBigArrayBigList l)
Compares this big list to another big list.
|
double[][] |
elements()
Returns the backing big array of this big list.
|
void |
ensureCapacity(long capacity)
Ensures that this big-array big list can contain the given number of entries without resizing.
|
boolean |
equals(DoubleBigArrayBigList l)
Compares this type-specific big-array list to another one.
|
boolean |
equals(java.lang.Object o) |
void |
forEach(java.util.function.DoubleConsumer action)
Performs the given action for each element of this type-specific
Iterable
until all elements have been processed or the action throws an
exception. |
double |
getDouble(long index)
Returns the element at the specified position.
|
void |
getElements(long from,
double[][] a,
long offset,
long length)
Copies element of this type-specific list into the given big array using optimized system calls.
|
long |
indexOf(double k)
Returns the index of the first occurrence of the specified element in this type-specific big list, or -1 if this big list does not contain the element.
|
boolean |
isEmpty()
Checks whether the stack is empty.
|
long |
lastIndexOf(double k)
Returns the index of the last occurrence of the specified element in this type-specific big list, or -1 if this big list does not contain the element.
|
DoubleBigListIterator |
listIterator(long index)
Returns a type-specific list iterator on this type-specific big list starting at a given index.
|
static DoubleBigArrayBigList |
of()
Creates a new empty big array list.
|
static DoubleBigArrayBigList |
of(double... init)
Creates a big array list using a list of elements.
|
boolean |
rem(double k)
Removes a single instance of the specified element from this collection, if it is present (optional operation).
|
boolean |
removeAll(java.util.Collection<?> c) |
boolean |
removeAll(DoubleCollection c)
Remove from this collection all elements in the given type-specific collection.
|
double |
removeDouble(long index)
Removes the element at the specified position.
|
void |
removeElements(long from,
long to)
Removes elements of this type-specific list using optimized system calls.
|
double |
set(long index,
double k)
Replaces the element at the specified position in this big list with the specified element (optional operation).
|
void |
setElements(long index,
double[][] a,
long offset,
long length)
Copies elements in the given big array into this type-specific list using optimized system calls.
|
void |
size(long size)
Sets the size of this big list.
|
long |
size64()
Returns the size of this data structure as a long.
|
DoubleSpliterator |
spliterator()
Returns a type-specific spliterator on the elements of this big-list.
|
DoubleBigList |
subList(long from,
long to)
Returns a type-specific view of the portion of this type-specific big list from the index
from , inclusive, to the index to , exclusive. |
static DoubleBigArrayBigList |
toBigList(java.util.stream.DoubleStream stream)
Collects the result of a primitive
Stream into a new BigArrayBigList. |
static DoubleBigArrayBigList |
toBigListWithExpectedSize(java.util.stream.DoubleStream stream,
long expectedSize)
Collects the result of a primitive
Stream into a new BigArrayBigList. |
void |
trim()
Trims this big-array big list so that the capacity is equal to the size.
|
void |
trim(long n)
Trims the backing big array if it is too large.
|
static DoubleBigArrayBigList |
wrap(double[][] a)
Wraps a given big array into a big-array big list.
|
static DoubleBigArrayBigList |
wrap(double[][] a,
long length)
Wraps a given big array into a big-array list of given size.
|
add, addAll, addAll, addAll, addElements, contains, get, hashCode, indexOf, iterator, lastIndexOf, listIterator, peek, peekDouble, pop, popDouble, push, push, remove, set, size, top, topDouble, toString
add, contains, containsAll, containsAll, forEach, remove, removeIf, retainAll, retainAll, toArray, toDoubleArray, toDoubleArray
addAll, addAll, setElements, setElements
add, contains, containsAll, doubleIterator, doubleParallelStream, doubleSpliterator, doubleStream, parallelStream, remove, removeIf, removeIf, removeIf, retainAll, stream, toArray, toDoubleArray, toDoubleArray
forEach, forEach
public static final int DEFAULT_INITIAL_CAPACITY
public DoubleBigArrayBigList(long capacity)
capacity
- the initial capacity of the array list (may be 0).public DoubleBigArrayBigList()
DEFAULT_INITIAL_CAPACITY
capacity.public DoubleBigArrayBigList(DoubleCollection c)
c
- a type-specific collection that will be used to fill the array list.public DoubleBigArrayBigList(DoubleBigList l)
l
- a type-specific list that will be used to fill the array list.public DoubleBigArrayBigList(double[][] a)
a
- a big array whose elements will be used to fill the array list.public DoubleBigArrayBigList(double[][] a, long offset, long length)
a
- a big array whose elements will be used to fill the array list.offset
- the first element to use.length
- the number of elements to use.public DoubleBigArrayBigList(java.util.Iterator<? extends java.lang.Double> i)
i
- an iterator whose returned elements will fill the array list.public DoubleBigArrayBigList(DoubleIterator i)
i
- a type-specific iterator whose returned elements will fill the array list.public double[][] elements()
public static DoubleBigArrayBigList wrap(double[][] a, long length)
a
- a big array to wrap.length
- the length of the resulting big-array list.public static DoubleBigArrayBigList wrap(double[][] a)
a
- a big array to wrap.public static DoubleBigArrayBigList of()
public static DoubleBigArrayBigList of(double... init)
init
- a list of elements that will be used to initialize the big list.
It is possible (but not assured) that the returned big-array big list will be
backed by the given array in one of its segments.BigArrays.wrap(byte[])
public static DoubleBigArrayBigList toBigList(java.util.stream.DoubleStream stream)
Stream
into a new BigArrayBigList.
This method performs a terminal operation on the given Stream
Collector
is necessary because there is no
primitive Collector
equivalent in the Java API.public static DoubleBigArrayBigList toBigListWithExpectedSize(java.util.stream.DoubleStream stream, long expectedSize)
Stream
into a new BigArrayBigList.
This method performs a terminal operation on the given Stream
Collector
is necessary because there is no
primitive Collector
equivalent in the Java API.public void ensureCapacity(long capacity)
capacity
- the new minimum capacity for this big-array big list.public void add(long index, double k)
AbstractDoubleBigList
add
in interface DoubleBigList
add
in class AbstractDoubleBigList
BigList.add(long,Object)
public boolean add(double k)
AbstractDoubleBigList
add
in interface DoubleCollection
add
in class AbstractDoubleBigList
Collection.add(Object)
public double getDouble(long index)
DoubleBigList
getDouble
in interface DoubleBigList
BigList.get(long)
public long indexOf(double k)
DoubleBigList
indexOf
in interface DoubleBigList
indexOf
in class AbstractDoubleBigList
BigList.indexOf(Object)
public long lastIndexOf(double k)
DoubleBigList
lastIndexOf
in interface DoubleBigList
lastIndexOf
in class AbstractDoubleBigList
BigList.lastIndexOf(Object)
public double removeDouble(long index)
AbstractDoubleBigList
removeDouble
in interface DoubleBigList
removeDouble
in class AbstractDoubleBigList
BigList.remove(long)
public boolean rem(double k)
AbstractDoubleBigList
rem
in interface DoubleCollection
rem
in class AbstractDoubleBigList
Collection.remove(Object)
public double set(long index, double k)
AbstractDoubleBigList
set
in interface DoubleBigList
set
in class AbstractDoubleBigList
BigList.set(long,Object)
public boolean removeAll(DoubleCollection c)
DoubleCollection
removeAll
in interface DoubleCollection
removeAll
in class AbstractDoubleCollection
c
- a type-specific collection.true
if this collection changed as a result of the call.Collection.removeAll(Collection)
public boolean removeAll(java.util.Collection<?> c)
AbstractDoubleCollection
removeAll
in interface java.util.Collection<java.lang.Double>
removeAll
in class AbstractDoubleCollection
public boolean addAll(long index, DoubleCollection c)
AbstractDoubleBigList
addAll
in interface DoubleBigList
addAll
in class AbstractDoubleBigList
List.addAll(int,java.util.Collection)
public boolean addAll(long index, DoubleBigList list)
DoubleBigList
addAll
in interface DoubleBigList
BigList.addAll(long,Collection)
public boolean addAll(long index, DoubleList list)
DoubleBigList
addAll
in interface DoubleBigList
BigList.addAll(long,Collection)
public void clear()
AbstractDoubleBigList
clear
in interface java.util.Collection<java.lang.Double>
clear
in class AbstractDoubleBigList
public long size64()
Size64
public void size(long size)
BigList
If the specified size is smaller than the current size, the last elements are
discarded. Otherwise, they are filled with 0/null
/false
.
size
in interface BigList<java.lang.Double>
size
in class AbstractDoubleBigList
size
- the new size.public boolean isEmpty()
Stack
public void trim()
ArrayList.trimToSize()
public void trim(long n)
n
, this method does nothing. Otherwise, it trims the
big-array length to the maximum between n
and size64()
.
This method is useful when reusing big lists. Clearing a big list leaves the big-array length untouched. If you are reusing a big list many times, you can call this method with a typical size to avoid keeping around a very large big array just because of a few large transient big lists.
n
- the threshold for the trimming.public DoubleBigList subList(long from, long to)
DoubleBigList
from
, inclusive, to the index to
, exclusive.subList
in interface BigList<java.lang.Double>
subList
in interface DoubleBigList
subList
in class AbstractDoubleBigList
from
- the starting element (inclusive).to
- the ending element (exclusive).BigList.subList(long,long)
public void getElements(long from, double[][] a, long offset, long length)
getElements
in interface DoubleBigList
getElements
in class AbstractDoubleBigList
from
- the start index (inclusive).a
- the destination big array.offset
- the offset into the destination array where to store the first element copied.length
- the number of elements to be copied.public void removeElements(long from, long to)
removeElements
in interface DoubleBigList
removeElements
in class AbstractDoubleBigList
from
- the start index (inclusive).to
- the end index (exclusive).public void addElements(long index, double[][] a, long offset, long length)
addElements
in interface DoubleBigList
addElements
in class AbstractDoubleBigList
index
- the index at which to add elements.a
- the big array containing the elements.offset
- the offset of the first element to add.length
- the number of elements to add.public void setElements(long index, double[][] a, long offset, long length)
setElements
in interface DoubleBigList
setElements
in class AbstractDoubleBigList
index
- the start index (inclusive).a
- the destination big array.offset
- the offset into the destination array where to store the first element copied.length
- the number of elements to be copied.public void forEach(java.util.function.DoubleConsumer action)
AbstractDoubleBigList
Iterable
until all elements have been processed or the action throws an
exception.forEach
in interface DoubleIterable
forEach
in class AbstractDoubleBigList
action
- the action to be performed for each element.Iterable.forEach(java.util.function.Consumer)
public DoubleBigListIterator listIterator(long index)
AbstractDoubleBigList
listIterator
in interface BigList<java.lang.Double>
listIterator
in interface DoubleBigList
listIterator
in class AbstractDoubleBigList
index
- index of first element to be returned from the big-list iterator.BigList.listIterator(long)
public DoubleSpliterator spliterator()
DoubleBigList
BigList spliterators must report at least Spliterator.SIZED
and Spliterator.ORDERED
.
See List.spliterator()
for more documentation on the requirements
of the returned spliterator (despite BigList
not being a List
, most of the
same requirements apply.
spliterator
in interface DoubleBigList
spliterator
in interface DoubleCollection
spliterator
in interface DoubleIterable
spliterator
in interface java.lang.Iterable<java.lang.Double>
spliterator
in interface java.util.Collection<java.lang.Double>
public DoubleBigArrayBigList clone()
clone
in class java.lang.Object
public boolean equals(DoubleBigArrayBigList l)
This method exists only for sake of efficiency. The implementation inherited from the abstract implementation would already work.
l
- a type-specific big-array list.public boolean equals(java.lang.Object o)
equals
in interface java.util.Collection<java.lang.Double>
equals
in class AbstractDoubleBigList
public int compareTo(DoubleBigArrayBigList l)
This method exists only for sake of efficiency. The implementation inherited from the abstract implementation would already work.
l
- a big list.public int compareTo(BigList<? extends java.lang.Double> l)
AbstractDoubleBigList
BigList
, this method performs a lexicographical comparison; otherwise,
it throws a ClassCastException
.compareTo
in interface java.lang.Comparable<BigList<? extends java.lang.Double>>
compareTo
in class AbstractDoubleBigList
l
- a big list.BigList
, a negative integer,
zero, or a positive integer as this list is lexicographically less than, equal
to, or greater than the argument.