it.unimi.dsi.fastutil.longs

Class AbstractLongList

java.lang.Object

java.util.AbstractCollection<Long>

it.unimi.dsi.fastutil.longs.AbstractLongCollection

it.unimi.dsi.fastutil.longs.AbstractLongList

All Implemented Interfaces:

LongCollection, LongIterable, LongList, LongStack, Stack<Long>, Comparable<List<? extends Long>>, Iterable<Long>, Collection<Long>, List<Long>

Direct Known Subclasses:

AbstractLongList.LongSubList, LongArrayList, LongLists.Singleton

public abstract class AbstractLongList
extends AbstractLongCollection
implements LongList, LongStack

An abstract class providing basic methods for lists implementing a type-specific list interface.

As an additional bonus, this class implements on top of the list operations a type-specific stack.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AbstractLongList.LongSubList A class implementing a sublist view.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractLongList()

Method Summary

Modifier and Type	Method and Description
void	add(int index, long k) Inserts the specified element at the specified position in this list (optional operation).
boolean	add(long k) Ensures that this collection contains the specified element (optional operation).
boolean	addAll(Collection<? extends Long> c)
boolean	addAll(int index, Collection<? extends Long> c) Adds all of the elements in the specified collection to this list (optional operation).
boolean	addAll(int index, LongCollection c) Inserts all of the elements in the specified type-specific collection into this type-specific list at the specified position (optional operation).
boolean	addAll(int index, LongList l) Inserts all of the elements in the specified type-specific list into this type-specific list at the specified position (optional operation).
boolean	addAll(LongCollection c) Adds all elements of the given type-specific collection to this collection.
boolean	addAll(LongList l) Appends all of the elements in the specified type-specific list to the end of this type-specific list (optional operation).
void	addElements(int index, long[] a) Add (hopefully quickly) elements to this type-specific list.
void	addElements(int index, long[] a, int offset, int length) Add (hopefully quickly) elements to this type-specific list.
void	clear()
int	compareTo(List<? extends Long> l) Compares this list to another object.
boolean	contains(long k) Returns true if this list contains the specified element.
protected void	ensureIndex(int index) Ensures that the given index is nonnegative and not greater than the list size.
protected void	ensureRestrictedIndex(int index) Ensures that the given index is nonnegative and smaller than the list size.
boolean	equals(Object o)
void	getElements(int from, long[] a, int offset, int length) Copies (hopefully quickly) elements of this type-specific list into the given array.
int	hashCode() Returns the hash code for this list, which is identical to List.hashCode().
int	indexOf(long k) Returns the index of the first occurrence of the specified element in this list, or -1 if this list does not contain the element.
LongListIterator	iterator() Returns a type-specific iterator on the elements of this collection.
int	lastIndexOf(long k) Returns the index of the last occurrence of the specified element in this list, or -1 if this list does not contain the element.
LongListIterator	listIterator() Returns a type-specific list iterator on the list.
LongListIterator	listIterator(int index) Returns a type-specific list iterator on the list starting at a given index.
long	peekLong(int i) Peeks at an element on the stack (optional operation).
long	popLong() Pops the top off the stack.
void	push(long o) Pushes the given object on the stack.
boolean	rem(long k) Removes a single instance of the specified element from this collection, if it is present (optional operation).
void	removeElements(int from, int to) Removes (hopefully quickly) elements of this type-specific list.
long	removeLong(int i) Removes the element at the specified position in this list (optional operation).
long	set(int index, long k) Replaces the element at the specified position in this list with the specified element (optional operation).
void	size(int size) Sets the size of this list.
LongList	subList(int from, int to) Returns a type-specific view of the portion of this list from the index from, inclusive, to the index to, exclusive.
long	topLong() Peeks at the top of the stack (optional operation).
String	toString()

Methods inherited from class it.unimi.dsi.fastutil.longs.AbstractLongCollection

add, contains, containsAll, remove, removeAll, retainAll, toArray, toLongArray, toLongArray

Methods inherited from class java.util.AbstractCollection

containsAll, isEmpty, removeAll, retainAll, size, toArray, toArray

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.longs.LongList

add, add, contains, get, getLong, indexOf, lastIndexOf, remove, remove, set, setElements, setElements, setElements, sort, sort, unstableSort, unstableSort

Methods inherited from interface java.util.List

containsAll, isEmpty, removeAll, replaceAll, retainAll, size, spliterator, toArray, toArray

Methods inherited from interface it.unimi.dsi.fastutil.longs.LongCollection

containsAll, removeAll, removeIf, removeIf, retainAll, toArray, toLongArray, toLongArray

Methods inherited from interface java.util.Collection

parallelStream, stream

Methods inherited from interface it.unimi.dsi.fastutil.longs.LongIterable

forEach, forEach

Methods inherited from interface it.unimi.dsi.fastutil.longs.LongStack

peek, pop, push, top

Methods inherited from interface it.unimi.dsi.fastutil.Stack

isEmpty

Constructor Detail

AbstractLongList

protected AbstractLongList()

Method Detail

ensureIndex

protected void ensureIndex(int index)

Ensures that the given index is nonnegative and not greater than the list size.

Parameters:

index - an index.

Throws:

IndexOutOfBoundsException - if the given index is negative or greater than the list size.

ensureRestrictedIndex

protected void ensureRestrictedIndex(int index)

Ensures that the given index is nonnegative and smaller than the list size.

Parameters:

index - an index.

Throws:

IndexOutOfBoundsException - if the given index is negative or not smaller than the list size.

add

public void add(int index,
                long k)

Inserts the specified element at the specified position in this list (optional operation).

This implementation always throws an UnsupportedOperationException.

Specified by:

add in interface LongList

See Also:

List.add(int,Object)

add

public boolean add(long k)

Ensures that this collection contains the specified element (optional operation).

This implementation always throws an UnsupportedOperationException.

This implementation delegates to the type-specific version of List.add(int, Object).

Specified by:

add in interface LongCollection

Specified by:

add in interface LongList

Overrides:

add in class AbstractLongCollection

See Also:

Collection.add(Object)

removeLong

public long removeLong(int i)

Removes the element at the specified position in this list (optional operation).

This implementation always throws an UnsupportedOperationException.

Specified by:

removeLong in interface LongList

See Also:

List.remove(int)

set

public long set(int index,
                long k)

Replaces the element at the specified position in this list with the specified element (optional operation).

This implementation always throws an UnsupportedOperationException.

Specified by:

set in interface LongList

See Also:

List.set(int,Object)

addAll

public boolean addAll(int index,
                      Collection<? extends Long> c)

Adds all of the elements in the specified collection to this list (optional operation).

Specified by:

addAll in interface List<Long>

addAll

public boolean addAll(Collection<? extends Long> c)

This implementation delegates to the type-specific version of List.addAll(int, Collection).

Specified by:

addAll in interface Collection<Long>

Specified by:

addAll in interface List<Long>

Overrides:

addAll in class AbstractCollection<Long>

iterator

public LongListIterator iterator()

Returns a type-specific iterator on the elements of this collection.

Note that this specification strengthens the one given in Iterable.iterator(), which was already strengthened in the corresponding type-specific class, but was weakened by the fact that this interface extends Collection.

This implementation delegates to listIterator().

Specified by:

iterator in interface LongCollection

Specified by:

iterator in interface LongIterable

Specified by:

iterator in interface LongList

Specified by:

iterator in interface Iterable<Long>

Specified by:

iterator in interface Collection<Long>

Specified by:

iterator in interface List<Long>

Specified by:

iterator in class AbstractLongCollection

Returns:

a type-specific iterator on the elements of this collection.

See Also:

Iterable.iterator()

listIterator

public LongListIterator listIterator()

Returns a type-specific list iterator on the list.

This implementation delegates to listIterator(0).

Specified by:

listIterator in interface LongList

Specified by:

listIterator in interface List<Long>

See Also:

List.listIterator()

listIterator

public LongListIterator listIterator(int index)

Returns a type-specific list iterator on the list starting at a given index.

This implementation is based on the random-access methods.

Specified by:

listIterator in interface LongList

Specified by:

listIterator in interface List<Long>

See Also:

List.listIterator(int)

contains

public boolean contains(long k)

Returns true if this list contains the specified element.

This implementation delegates to indexOf().

Specified by:

contains in interface LongCollection

Overrides:

contains in class AbstractLongCollection

See Also:

List.contains(Object)

indexOf

public int indexOf(long k)

Description copied from interface: LongList

Returns the index of the first occurrence of the specified element in this list, or -1 if this list does not contain the element.

Specified by:

indexOf in interface LongList

See Also:

List.indexOf(Object)

lastIndexOf

public int lastIndexOf(long k)

Description copied from interface: LongList

Returns the index of the last occurrence of the specified element in this list, or -1 if this list does not contain the element.

Specified by:

lastIndexOf in interface LongList

See Also:

List.lastIndexOf(Object)

size

public void size(int size)

Description copied from interface: LongList

Sets the size of this list.

If the specified size is smaller than the current size, the last elements are discarded. Otherwise, they are filled with 0/null/false.

Specified by:

size in interface LongList

Parameters:

size - the new size.

subList

public LongList subList(int from,
                        int to)

Description copied from interface: LongList

Returns a type-specific view of the portion of this list from the index from, inclusive, to the index to, exclusive.

Note that this specification strengthens the one given in List.subList(int,int).

Specified by:

subList in interface LongList

Specified by:

subList in interface List<Long>

See Also:

List.subList(int,int)

removeElements

public void removeElements(int from,
                           int to)

Removes (hopefully quickly) elements of this type-specific list.

This is a trivial iterator-based implementation. It is expected that implementations will override this method with a more optimized version.

Specified by:

removeElements in interface LongList

Parameters:

from - the start index (inclusive).

to - the end index (exclusive).

addElements

public void addElements(int index,
                        long[] a,
                        int offset,
                        int length)

Add (hopefully quickly) elements to this type-specific list.

This is a trivial iterator-based implementation. It is expected that implementations will override this method with a more optimized version.

Specified by:

addElements in interface LongList

Parameters:

index - the index at which to add elements.

a - the array containing the elements.

offset - the offset of the first element to add.

length - the number of elements to add.

addElements

public void addElements(int index,
                        long[] a)

Add (hopefully quickly) elements to this type-specific list.

This implementation delegates to the analogous method for array fragments.

Specified by:

addElements in interface LongList

Parameters:

index - the index at which to add elements.

a - the array containing the elements.

getElements

public void getElements(int from,
                        long[] a,
                        int offset,
                        int length)

Copies (hopefully quickly) elements of this type-specific list into the given array.

This is a trivial iterator-based implementation. It is expected that implementations will override this method with a more optimized version.

Specified by:

getElements in interface LongList

Parameters:

from - the start index (inclusive).

a - the destination array.

offset - the offset into the destination array where to store the first element copied.

length - the number of elements to be copied.

clear

public void clear()

This implementation delegates to removeElements(int, int).

Specified by:

clear in interface Collection<Long>

Specified by:

clear in interface List<Long>

Overrides:

clear in class AbstractCollection<Long>

hashCode

public int hashCode()

Returns the hash code for this list, which is identical to List.hashCode().

Specified by:

hashCode in interface Collection<Long>

Specified by:

hashCode in interface List<Long>

Overrides:

hashCode in class Object

Returns:

the hash code for this list.

equals

public boolean equals(Object o)

Specified by:

equals in interface Collection<Long>

Specified by:

equals in interface List<Long>

Overrides:

equals in class Object

compareTo

public int compareTo(List<? extends Long> l)

Compares this list to another object. If the argument is a List, this method performs a lexicographical comparison; otherwise, it throws a ClassCastException.

Specified by:

compareTo in interface Comparable<List<? extends Long>>

Parameters:

l - a list.

Returns:

if the argument is a List, a negative integer, zero, or a positive integer as this list is lexicographically less than, equal to, or greater than the argument.

Throws:

ClassCastException - if the argument is not a list.

push

public void push(long o)

Description copied from interface: LongStack

Pushes the given object on the stack.

Specified by:

push in interface LongStack

Parameters:

o - the object to push on the stack.

See Also:

Stack.push(Object)

popLong

public long popLong()

Description copied from interface: LongStack

Pops the top off the stack.

Specified by:

popLong in interface LongStack

Returns:

the top of the stack.

See Also:

Stack.pop()

topLong

public long topLong()

Description copied from interface: LongStack

Peeks at the top of the stack (optional operation).

Specified by:

topLong in interface LongStack

Returns:

the top of the stack.

See Also:

Stack.top()

peekLong

public long peekLong(int i)

Description copied from interface: LongStack

Peeks at an element on the stack (optional operation).

Specified by:

peekLong in interface LongStack

Parameters:

i - an index from the stop of the stack (0 represents the top).

Returns:

the i-th element on the stack.

See Also:

Stack.peek(int)

rem

public boolean rem(long k)

Removes a single instance of the specified element from this collection, if it is present (optional operation).

This implementation delegates to indexOf().

Specified by:

rem in interface LongCollection

Overrides:

rem in class AbstractLongCollection

See Also:

List.remove(Object)

addAll

public boolean addAll(int index,
                      LongCollection c)

Description copied from interface: LongList

Inserts all of the elements in the specified type-specific collection into this type-specific list at the specified position (optional operation).

Specified by:

addAll in interface LongList

See Also:

List.addAll(int,java.util.Collection)

addAll

public boolean addAll(int index,
                      LongList l)

Inserts all of the elements in the specified type-specific list into this type-specific list at the specified position (optional operation).

This implementation delegates to the type-specific version of List.addAll(int, Collection).

Specified by:

addAll in interface LongList

See Also:

List.add(int,Object)

addAll

public boolean addAll(LongCollection c)

Adds all elements of the given type-specific collection to this collection.

This implementation delegates to the type-specific version of List.addAll(int, Collection).

Specified by:

addAll in interface LongCollection

Overrides:

addAll in class AbstractLongCollection

Parameters:

c - a type-specific collection.

Returns:

true if this collection changed as a result of the call.

See Also:

Collection.addAll(Collection)

addAll

public boolean addAll(LongList l)

Appends all of the elements in the specified type-specific list to the end of this type-specific list (optional operation).

This implementation delegates to the type-specific list version of List.addAll(int, Collection).

Specified by:

addAll in interface LongList

See Also:

List.add(int,Object)

toString

public String toString()

Overrides:

toString in class AbstractLongCollection