Package it.unimi.dsi.fastutil.objects
Class ObjectBigListIterators.AbstractIndexBasedBigListIterator<K>
- java.lang.Object
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- it.unimi.dsi.fastutil.objects.AbstractObjectIterator<K>
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- it.unimi.dsi.fastutil.objects.ObjectBigListIterators.AbstractIndexBasedBigIterator<K>
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- it.unimi.dsi.fastutil.objects.ObjectBigListIterators.AbstractIndexBasedBigListIterator<K>
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- All Implemented Interfaces:
BidirectionalIterator<K>
,BigListIterator<K>
,ObjectBidirectionalIterator<K>
,ObjectBigListIterator<K>
,ObjectIterator<K>
,java.util.Iterator<K>
- Enclosing class:
- ObjectBigListIterators
public abstract static class ObjectBigListIterators.AbstractIndexBasedBigListIterator<K> extends ObjectBigListIterators.AbstractIndexBasedBigIterator<K> implements ObjectBigListIterator<K>
A skeletal implementation for a list-iterator backed by an index based data store. High performance concrete implementations (like the main ListIterator of ArrayList) generally should avoid using this and just implement the interface directly, but should be decent for less performance critical implementations.As the abstract methods in this class are used in inner loops, it is generally a good idea to override the class as
final
as to encourage the JVM to inline them (or alternatively, override the abstract methods as final).
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
add(K k)
Inserts the specified element into the list (optional operation).long
back(long n)
Moves back for the given number of elements.boolean
hasPrevious()
Returns whether there is a previous element.long
nextIndex()
Returns the index of the element that would be returned by a subsequent call to next.K
previous()
Returns the previous element from the collection.long
previousIndex()
Returns the index of the element that would be returned by a subsequent call to previous.void
set(K k)
Replaces the last element returned bynext()
orprevious()
with the specified element (optional operation).-
Methods inherited from class it.unimi.dsi.fastutil.objects.ObjectBigListIterators.AbstractIndexBasedBigIterator
forEachRemaining, hasNext, next, remove, skip, skip
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Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface it.unimi.dsi.fastutil.objects.ObjectBidirectionalIterator
back
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Methods inherited from interface it.unimi.dsi.fastutil.objects.ObjectBigListIterator
skip, skip
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Method Detail
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hasPrevious
public boolean hasPrevious()
Description copied from interface:BidirectionalIterator
Returns whether there is a previous element.- Specified by:
hasPrevious
in interfaceBidirectionalIterator<K>
- Returns:
- whether there is a previous element.
- See Also:
ListIterator.hasPrevious()
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previous
public K previous()
Description copied from interface:BidirectionalIterator
Returns the previous element from the collection.- Specified by:
previous
in interfaceBidirectionalIterator<K>
- Returns:
- the previous element from the collection.
- See Also:
ListIterator.previous()
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nextIndex
public long nextIndex()
Description copied from interface:BigListIterator
Returns the index of the element that would be returned by a subsequent call to next. (Returns list size if the list iterator is at the end of the list.)- Specified by:
nextIndex
in interfaceBigListIterator<K>
- Returns:
- the index of the element that would be returned by a subsequent call to next, or list size if list iterator is at end of list.
- See Also:
ListIterator.nextIndex()
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previousIndex
public long previousIndex()
Description copied from interface:BigListIterator
Returns the index of the element that would be returned by a subsequent call to previous. (Returns -1 if the list iterator is at the beginning of the list.)- Specified by:
previousIndex
in interfaceBigListIterator<K>
- Returns:
- the index of the element that would be returned by a subsequent call to previous, or -1 if list iterator is at beginning of list.
- See Also:
ListIterator.previousIndex()
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add
public void add(K k)
Description copied from interface:ObjectBigListIterator
Inserts the specified element into the list (optional operation).- Specified by:
add
in interfaceBigListIterator<K>
- Specified by:
add
in interfaceObjectBigListIterator<K>
- Parameters:
k
- an element.- See Also:
ListIterator.add(Object)
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set
public void set(K k)
Description copied from interface:ObjectBigListIterator
Replaces the last element returned bynext()
orprevious()
with the specified element (optional operation).- Specified by:
set
in interfaceBigListIterator<K>
- Specified by:
set
in interfaceObjectBigListIterator<K>
- Parameters:
k
- an element.- See Also:
ListIterator.set(Object)
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back
public long back(long n)
Description copied from interface:ObjectBigListIterator
Moves back for the given number of elements.The effect of this call is exactly the same as that of calling
previous()
forn
times (possibly stopping ifBidirectionalIterator.hasPrevious()
becomes false).- Specified by:
back
in interfaceObjectBigListIterator<K>
- Parameters:
n
- the number of elements to skip back.- Returns:
- the number of elements actually skipped.
- See Also:
BidirectionalIterator.previous()
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