Package it.unimi.dsi.fastutil.ints

Class IntLists.Singleton

java.lang.Object
java.util.AbstractCollection<java.lang.Integer>
it.unimi.dsi.fastutil.ints.AbstractIntCollection
it.unimi.dsi.fastutil.ints.AbstractIntList
it.unimi.dsi.fastutil.ints.IntLists.Singleton
All Implemented Interfaces:
IntCollection, IntIterable, IntList, IntStack, Stack<java.lang.Integer>, java.io.Serializable, java.lang.Cloneable, java.lang.Comparable<java.util.List<? extends java.lang.Integer>>, java.lang.Iterable<java.lang.Integer>, java.util.Collection<java.lang.Integer>, java.util.List<java.lang.Integer>, java.util.RandomAccess
Enclosing class:
IntLists
public static class IntLists.Singleton
extends AbstractIntList
implements java.util.RandomAccess, java.io.Serializable, java.lang.Cloneable
An immutable class representing a type-specific singleton list.

This class may be useful to implement your own in case you subclass a type-specific list.

See Also:
Serialized Form

  • Nested Class Summary

    Nested classes/interfaces inherited from class it.unimi.dsi.fastutil.ints.AbstractIntList

    AbstractIntList.IntRandomAccessSubList, AbstractIntList.IntSubList

  • Method Summary

    Modifier and Type Method Description
    boolean addAll​(int i, IntCollection 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 i, IntList c)
    Inserts all of the elements in the specified type-specific list into this type-specific list at the specified position (optional operation).
    boolean addAll​(int i, java.util.Collection<? extends java.lang.Integer> c)
    Adds all of the elements in the specified collection to this list (optional operation).
    boolean addAll​(IntCollection c)
    Adds all elements of the given type-specific collection to this collection.
    boolean addAll​(IntList c)
    Appends all of the elements in the specified type-specific list to the end of this type-specific list (optional operation).
    boolean addAll​(java.util.Collection<? extends java.lang.Integer> c)
    void addElements​(int index, int[] a)
    Add (hopefully quickly) elements to this type-specific list.
    void addElements​(int index, int[] a, int offset, int length)
    Add (hopefully quickly) elements to this type-specific list.
    void clear()
    java.lang.Object clone()  
    boolean contains​(int k)
    Returns true if this list contains the specified element.
    void forEach​(java.util.function.Consumer<? super java.lang.Integer> action)
    Deprecated.
    void forEach​(java.util.function.IntConsumer 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.
    void getElements​(int from, int[] a, int offset, int length)
    Copies (hopefully quickly) elements of this type-specific list into the given array.
    int getInt​(int i)
    Returns the element at the specified position in this list.
    int indexOf​(int 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.
    IntListIterator iterator()
    Returns a type-specific iterator on the elements of this collection.
    IntListIterator listIterator()
    Returns a type-specific list iterator on the list.
    IntListIterator listIterator​(int i)
    Returns a type-specific list iterator on the list starting at a given index.
    boolean rem​(int k)
    Removes a single instance of the specified element from this collection, if it is present (optional operation).
    boolean removeAll​(IntCollection c)
    Remove from this collection all elements in the given type-specific collection.
    boolean removeAll​(java.util.Collection<?> c)
    void removeElements​(int from, int to)
    Removes (hopefully quickly) elements of this type-specific list.
    boolean removeIf​(java.util.function.IntPredicate filter)
    Remove from this collection all elements which satisfy the given predicate.
    boolean removeIf​(java.util.function.Predicate<? super java.lang.Integer> filter)
    Deprecated.
    int removeInt​(int i)
    Removes the element at the specified position in this list (optional operation).
    void replaceAll​(java.util.function.IntUnaryOperator operator)
    Replaces each element of this list with the result of applying the operator to that element.
    void replaceAll​(java.util.function.UnaryOperator<java.lang.Integer> operator)
    Deprecated.
    boolean retainAll​(IntCollection c)
    Retains in this collection only elements from the given type-specific collection.
    boolean retainAll​(java.util.Collection<?> c)
    void setElements​(int[] a)
    Set (hopefully quickly) elements to match the array given.
    void setElements​(int index, int[] a)
    Set (hopefully quickly) elements to match the array given.
    void setElements​(int index, int[] a, int offset, int length)
    Set (hopefully quickly) elements to match the array given.
    int size()  
    void size​(int size)
    Sets the size of this list.
    void sort​(IntComparator comparator)
    Sort a list using a type-specific comparator.
    void sort​(java.util.Comparator<? super java.lang.Integer> comparator)
    Deprecated.
    IntSpliterator spliterator()
    Returns a type-specific spliterator on the elements of this list.
    IntList 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.
    java.lang.Object[] toArray()
    Deprecated.
    int[] toIntArray()
    Returns a primitive type array containing the items of this collection.
    void unstableSort​(IntComparator comparator)
    Sorts this list using a sort not assured to be stable.
    void unstableSort​(java.util.Comparator<? super java.lang.Integer> comparator)
    Deprecated.

    Methods inherited from class it.unimi.dsi.fastutil.ints.AbstractIntList

    add, add, compareTo, equals, hashCode, lastIndexOf, peekInt, popInt, push, replaceAll, set, toArray, topInt, toString

    Methods inherited from class it.unimi.dsi.fastutil.ints.AbstractIntCollection

    add, contains, containsAll, containsAll, forEach, remove, removeIf, toIntArray

    Methods inherited from class java.util.AbstractCollection

    isEmpty, toArray

    Methods inherited from class java.lang.Object

    getClass, notify, notifyAll, wait, wait, wait

    Methods inherited from interface java.util.Collection

    toArray

    Methods inherited from interface it.unimi.dsi.fastutil.ints.IntCollection

    containsAll, intIterator, intParallelStream, intSpliterator, intStream, parallelStream, removeIf, stream, toIntArray

    Methods inherited from interface it.unimi.dsi.fastutil.ints.IntIterable

    forEach

    Methods inherited from interface it.unimi.dsi.fastutil.ints.IntList

    add, add, contains, get, indexOf, lastIndexOf, remove, remove, set

    Methods inherited from interface it.unimi.dsi.fastutil.ints.IntStack

    peek, pop, push, top

    Methods inherited from interface java.util.List

    containsAll, isEmpty, toArray

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

    isEmpty

  • Method Details

    • getInt

      public int getInt​(int i)
      Description copied from interface: IntList
      Returns the element at the specified position in this list.
      Specified by:
      getInt in interface IntList
      See Also:
      List.get(int)

    • rem

      public boolean rem​(int k)
      Description copied from class: AbstractIntList
      Removes a single instance of the specified element from this collection, if it is present (optional operation).
      Specified by:
      rem in interface IntCollection
      Overrides:
      rem in class AbstractIntList
      See Also:
      List.remove(Object)

    • removeInt

      public int removeInt​(int i)
      Description copied from class: AbstractIntList
      Removes the element at the specified position in this list (optional operation).
      Specified by:
      removeInt in interface IntList
      Overrides:
      removeInt in class AbstractIntList
      See Also:
      List.remove(int)

    • contains

      public boolean contains​(int k)
      Description copied from class: AbstractIntList
      Returns true if this list contains the specified element.
      Specified by:
      contains in interface IntCollection
      Overrides:
      contains in class AbstractIntList
      See Also:
      List.contains(Object)

    • indexOf

      public int indexOf​(int k)
      Description copied from interface: IntList
      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 IntList
      Overrides:
      indexOf in class AbstractIntList
      See Also:
      List.indexOf(Object)

    • toIntArray

      public int[] toIntArray()
      Description copied from interface: IntCollection
      Returns a primitive type array containing the items of this collection.
      Specified by:
      toIntArray in interface IntCollection
      Overrides:
      toIntArray in class AbstractIntList
      Returns:
      a primitive type array containing the items of this collection.
      See Also:
      Collection.toArray()

    • listIterator

      public IntListIterator listIterator()
      Description copied from class: AbstractIntList
      Returns a type-specific list iterator on the list.
      Specified by:
      listIterator in interface IntList
      Specified by:
      listIterator in interface java.util.List<java.lang.Integer>
      Overrides:
      listIterator in class AbstractIntList
      See Also:
      List.listIterator()

    • iterator

      public IntListIterator iterator()
      Description copied from class: AbstractIntList
      Returns a type-specific iterator on the elements of this collection.
      Specified by:
      iterator in interface java.util.Collection<java.lang.Integer>
      Specified by:
      iterator in interface IntCollection
      Specified by:
      iterator in interface IntIterable
      Specified by:
      iterator in interface IntList
      Specified by:
      iterator in interface java.lang.Iterable<java.lang.Integer>
      Specified by:
      iterator in interface java.util.List<java.lang.Integer>
      Overrides:
      iterator in class AbstractIntList
      Returns:
      a type-specific iterator on the elements of this collection.
      See Also:
      Iterable.iterator()

    • spliterator

      public IntSpliterator spliterator()
      Description copied from interface: IntList
      Returns a type-specific spliterator on the elements of this list.

      List spliterators must report at least Spliterator.SIZED and Spliterator.ORDERED.

      See List.spliterator() for more documentation on the requirements of the returned spliterator.

      Specified by:
      spliterator in interface java.util.Collection<java.lang.Integer>
      Specified by:
      spliterator in interface IntCollection
      Specified by:
      spliterator in interface IntIterable
      Specified by:
      spliterator in interface IntList
      Specified by:
      spliterator in interface java.lang.Iterable<java.lang.Integer>
      Specified by:
      spliterator in interface java.util.List<java.lang.Integer>
      Returns:
      a type-specific spliterator on the elements of this collection.

    • listIterator

      public IntListIterator listIterator​(int i)
      Description copied from class: AbstractIntList
      Returns a type-specific list iterator on the list starting at a given index.
      Specified by:
      listIterator in interface IntList
      Specified by:
      listIterator in interface java.util.List<java.lang.Integer>
      Overrides:
      listIterator in class AbstractIntList
      See Also:
      List.listIterator(int)

    • subList

      public IntList subList​(int from, int to)
      Description copied from interface: IntList
      Returns a type-specific view of the portion of this list from the index from, inclusive, to the index to, exclusive.
      Specified by:
      subList in interface IntList
      Specified by:
      subList in interface java.util.List<java.lang.Integer>
      Overrides:
      subList in class AbstractIntList
      See Also:
      List.subList(int,int)

    • forEach

      @Deprecated public void forEach​(java.util.function.Consumer<? super java.lang.Integer> action)
      Deprecated.
      Description copied from interface: IntIterable
      Specified by:
      forEach in interface IntIterable
      Specified by:
      forEach in interface java.lang.Iterable<java.lang.Integer>

    • addAll

      public boolean addAll​(int i, java.util.Collection<? extends java.lang.Integer> c)
      Description copied from class: AbstractIntList
      Adds all of the elements in the specified collection to this list (optional operation).
      Specified by:
      addAll in interface java.util.List<java.lang.Integer>
      Overrides:
      addAll in class AbstractIntList

    • addAll

      public boolean addAll​(java.util.Collection<? extends java.lang.Integer> c)
      Description copied from class: AbstractIntList
      Specified by:
      addAll in interface java.util.Collection<java.lang.Integer>
      Specified by:
      addAll in interface java.util.List<java.lang.Integer>
      Overrides:
      addAll in class AbstractIntList

    • removeAll

      public boolean removeAll​(java.util.Collection<?> c)
      Description copied from class: AbstractIntCollection
      Specified by:
      removeAll in interface java.util.Collection<java.lang.Integer>
      Specified by:
      removeAll in interface java.util.List<java.lang.Integer>
      Overrides:
      removeAll in class AbstractIntCollection

    • retainAll

      public boolean retainAll​(java.util.Collection<?> c)
      Description copied from class: AbstractIntCollection
      Specified by:
      retainAll in interface java.util.Collection<java.lang.Integer>
      Specified by:
      retainAll in interface java.util.List<java.lang.Integer>
      Overrides:
      retainAll in class AbstractIntCollection

    • removeIf

      @Deprecated public boolean removeIf​(java.util.function.Predicate<? super java.lang.Integer> filter)
      Deprecated.
      Description copied from interface: IntCollection
      Specified by:
      removeIf in interface java.util.Collection<java.lang.Integer>
      Specified by:
      removeIf in interface IntCollection

    • replaceAll

      @Deprecated public void replaceAll​(java.util.function.UnaryOperator<java.lang.Integer> operator)
      Deprecated.
      Description copied from interface: IntList
      Specified by:
      replaceAll in interface IntList
      Specified by:
      replaceAll in interface java.util.List<java.lang.Integer>

    • replaceAll

      public void replaceAll​(java.util.function.IntUnaryOperator operator)
      Description copied from interface: IntList
      Replaces each element of this list with the result of applying the operator to that element.
      Specified by:
      replaceAll in interface IntList
      Parameters:
      operator - the operator to apply to each element.
      See Also:
      List.replaceAll(java.util.function.UnaryOperator<E>)

    • forEach

      public void forEach​(java.util.function.IntConsumer action)
      Description copied from class: AbstractIntList
      Performs the given action for each element of this type-specific Iterable until all elements have been processed or the action throws an exception.
      Specified by:
      forEach in interface IntIterable
      Overrides:
      forEach in class AbstractIntList
      Parameters:
      action - the action to be performed for each element.
      See Also:
      Iterable.forEach(java.util.function.Consumer)

    • addAll

      public boolean addAll​(IntList c)
      Description copied from interface: IntList
      Appends all of the elements in the specified type-specific list to the end of this type-specific list (optional operation).
      Specified by:
      addAll in interface IntList
      See Also:
      List.addAll(Collection)

    • addAll

      public boolean addAll​(int i, IntList c)
      Description copied from interface: IntList
      Inserts all of the elements in the specified type-specific list into this type-specific list at the specified position (optional operation).
      Specified by:
      addAll in interface IntList
      See Also:
      List.addAll(int,Collection)

    • addAll

      public boolean addAll​(int i, IntCollection c)
      Description copied from interface: IntList
      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 IntList
      Overrides:
      addAll in class AbstractIntList
      See Also:
      List.addAll(int,java.util.Collection)

    • addAll

      public boolean addAll​(IntCollection c)
      Description copied from class: AbstractIntList
      Adds all elements of the given type-specific collection to this collection.
      Specified by:
      addAll in interface IntCollection
      Overrides:
      addAll in class AbstractIntList
      Parameters:
      c - a type-specific collection.
      Returns:
      true if this collection changed as a result of the call.
      See Also:
      Collection.addAll(Collection)

    • removeAll

      public boolean removeAll​(IntCollection c)
      Description copied from interface: IntCollection
      Remove from this collection all elements in the given type-specific collection.
      Specified by:
      removeAll in interface IntCollection
      Overrides:
      removeAll in class AbstractIntCollection
      Parameters:
      c - a type-specific collection.
      Returns:
      true if this collection changed as a result of the call.
      See Also:
      Collection.removeAll(Collection)

    • retainAll

      public boolean retainAll​(IntCollection c)
      Description copied from interface: IntCollection
      Retains in this collection only elements from the given type-specific collection.
      Specified by:
      retainAll in interface IntCollection
      Overrides:
      retainAll in class AbstractIntCollection
      Parameters:
      c - a type-specific collection.
      Returns:
      true if this collection changed as a result of the call.
      See Also:
      Collection.retainAll(Collection)

    • removeIf

      public boolean removeIf​(java.util.function.IntPredicate filter)
      Description copied from interface: IntCollection
      Remove from this collection all elements which satisfy the given predicate.
      Specified by:
      removeIf in interface IntCollection
      Parameters:
      filter - a predicate which returns true for elements to be removed.
      Returns:
      true if any elements were removed.
      See Also:
      Collection.removeIf(java.util.function.Predicate)

    • toArray

      @Deprecated public java.lang.Object[] toArray()
      Deprecated.
      Specified by:
      toArray in interface java.util.Collection<java.lang.Integer>
      Specified by:
      toArray in interface java.util.List<java.lang.Integer>
      Overrides:
      toArray in class java.util.AbstractCollection<java.lang.Integer>

    • sort

      public void sort​(IntComparator comparator)
      Description copied from interface: IntList
      Sort a list using a type-specific comparator.

      Pass null to sort using natural ordering.

      Specified by:
      sort in interface IntList
      See Also:
      List.sort(java.util.Comparator)

    • unstableSort

      public void unstableSort​(IntComparator comparator)
      Description copied from interface: IntList
      Sorts this list using a sort not assured to be stable.

      Pass null to sort using natural ordering.

      This differs from List.sort(java.util.Comparator) in that the results are not assured to be stable, but may be a bit faster.

      Unless a subclass specifies otherwise, the results of the method if the list is concurrently modified during the sort are unspecified.

      Specified by:
      unstableSort in interface IntList

    • sort

      @Deprecated public void sort​(java.util.Comparator<? super java.lang.Integer> comparator)
      Deprecated.
      Description copied from interface: IntList
      Specified by:
      sort in interface IntList
      Specified by:
      sort in interface java.util.List<java.lang.Integer>

    • unstableSort

      @Deprecated public void unstableSort​(java.util.Comparator<? super java.lang.Integer> comparator)
      Deprecated.
      Description copied from interface: IntList
      Sorts this list using a sort not assured to be stable.
      Specified by:
      unstableSort in interface IntList

    • getElements

      public void getElements​(int from, int[] a, int offset, int length)
      Description copied from class: AbstractIntList
      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 IntList
      Overrides:
      getElements in class AbstractIntList
      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.

    • removeElements

      public void removeElements​(int from, int to)
      Description copied from class: AbstractIntList
      Removes (hopefully quickly) elements of this type-specific list.

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

      Specified by:
      removeElements in interface IntList
      Overrides:
      removeElements in class AbstractIntList
      Parameters:
      from - the start index (inclusive).
      to - the end index (exclusive).

    • addElements

      public void addElements​(int index, int[] a)
      Description copied from class: AbstractIntList
      Add (hopefully quickly) elements to this type-specific list.
      Specified by:
      addElements in interface IntList
      Overrides:
      addElements in class AbstractIntList
      Parameters:
      index - the index at which to add elements.
      a - the array containing the elements.

    • addElements

      public void addElements​(int index, int[] a, int offset, int length)
      Description copied from class: AbstractIntList
      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 IntList
      Overrides:
      addElements in class AbstractIntList
      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.

    • setElements

      public void setElements​(int[] a)
      Description copied from interface: IntList
      Set (hopefully quickly) elements to match the array given.
      Specified by:
      setElements in interface IntList
      Parameters:
      a - the array containing the elements.

    • setElements

      public void setElements​(int index, int[] a)
      Description copied from interface: IntList
      Set (hopefully quickly) elements to match the array given.
      Specified by:
      setElements in interface IntList
      Parameters:
      index - the index at which to start setting elements.
      a - the array containing the elements.

    • setElements

      public void setElements​(int index, int[] a, int offset, int length)
      Description copied from interface: IntList
      Set (hopefully quickly) elements to match the array given. Sets each in this list to the corresponding elements in the array, as if by 
      
 ListIterator iter = listIterator(index);
 int i = 0;
 while (i < length) {
   iter.next();
   iter.set(a[offset + i++]);
 }
      However, the exact implementation may be more efficient, taking into account whether random access is faster or not, or at the discretion of subclasses, abuse internals.
      Specified by:
      setElements in interface IntList
      Overrides:
      setElements in class AbstractIntList
      Parameters:
      index - the index at which to start setting elements.
      a - the array containing the elements
      offset - the offset of the first element to add.
      length - the number of elements to add.

    • size

      public int size()
      Specified by:
      size in interface java.util.Collection<java.lang.Integer>
      Specified by:
      size in interface java.util.List<java.lang.Integer>
      Specified by:
      size in class java.util.AbstractCollection<java.lang.Integer>

    • size

      public void size​(int size)
      Description copied from interface: IntList
      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 IntList
      Overrides:
      size in class AbstractIntList
      Parameters:
      size - the new size.

    • clear

      public void clear()
      Description copied from class: AbstractIntList
      Specified by:
      clear in interface java.util.Collection<java.lang.Integer>
      Specified by:
      clear in interface java.util.List<java.lang.Integer>
      Overrides:
      clear in class AbstractIntList

    • clone

      public java.lang.Object clone()