Package it.unimi.dsi.fastutil.ints

Class IntLists.EmptyList

java.lang.Object
java.util.AbstractCollection<java.lang.Integer>
it.unimi.dsi.fastutil.ints.AbstractIntCollection
it.unimi.dsi.fastutil.ints.IntCollections.EmptyCollection
it.unimi.dsi.fastutil.ints.IntLists.EmptyList
All Implemented Interfaces:
IntCollection, IntIterable, IntList, 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.EmptyList
extends IntCollections.EmptyCollection
implements IntList, java.util.RandomAccess, java.io.Serializable, java.lang.Cloneable
An immutable class representing an empty type-specific list.

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

See Also:
Serialized Form

  • Method Summary

    Modifier and Type Method Description
    void add​(int index, int k)
    Inserts the specified element at the specified position in this list (optional operation).
    void add​(int index, java.lang.Integer k)
    Deprecated.
    Please use the corresponding type-specific method instead.
    boolean add​(java.lang.Integer k)
    Deprecated.
    Please use the corresponding type-specific method instead.
    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)  
    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).
    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.
    java.lang.Object clone()  
    int compareTo​(java.util.List<? extends java.lang.Integer> o)  
    boolean equals​(java.lang.Object o)  
    java.lang.Integer get​(int index)
    Deprecated.
    Please use the corresponding type-specific method instead.
    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 hashCode()  
    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.
    int indexOf​(java.lang.Object k)
    Deprecated.
    Please use the corresponding type-specific method instead.
    IntListIterator iterator()
    Returns a type-specific iterator on the elements of this collection.
    int lastIndexOf​(int 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.
    int lastIndexOf​(java.lang.Object k)
    Deprecated.
    Please use the corresponding type-specific method instead.
    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).
    java.lang.Integer remove​(int k)
    Deprecated.
    Please use the corresponding type-specific method instead.
    void removeElements​(int from, int to)
    Removes (hopefully quickly) elements of this type-specific list.
    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.
    int set​(int index, int k)
    Replaces the element at the specified position in this list with the specified element (optional operation).
    java.lang.Integer set​(int index, java.lang.Integer k)
    Deprecated.
    Please use the corresponding type-specific method instead.
    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.
    void size​(int s)
    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.
    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.String toString()  
    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.IntCollections.EmptyCollection

    addAll, addAll, clear, contains, containsAll, containsAll, forEach, forEach, removeAll, removeAll, removeIf, removeIf, retainAll, retainAll, size, spliterator, toArray, toArray, toIntArray, toIntArray

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

    add, contains, forEach, remove, removeIf, toArray

    Methods inherited from class java.util.AbstractCollection

    isEmpty

    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

    addAll, contains, containsAll, intIterator, intParallelStream, intSpliterator, intStream, parallelStream, removeAll, removeIf, removeIf, removeIf, retainAll, stream, toArray, toIntArray, toIntArray

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

    forEach, forEach, forEach

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

    add, contains, remove, replaceAll, spliterator

    Methods inherited from interface java.util.List

    addAll, clear, containsAll, isEmpty, removeAll, retainAll, size, toArray, toArray

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

      Note that this method should be called remove(), but the clash with the similarly named index-based method in the List interface forces us to use a distinguished name. For simplicity, the set interfaces reinstates remove().

      Specified by:
      rem in interface IntCollection
      Overrides:
      rem in class AbstractIntCollection
      See Also:
      Collection.remove(Object)

    • removeInt

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

    • add

      public void add​(int index, int k)
      Description copied from interface: IntList
      Inserts the specified element at the specified position in this list (optional operation).
      Specified by:
      add in interface IntList
      See Also:
      List.add(int,Object)

    • set

      public int set​(int index, int k)
      Description copied from interface: IntList
      Replaces the element at the specified position in this list with the specified element (optional operation).
      Specified by:
      set in interface IntList
      See Also:
      List.set(int,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
      See Also:
      List.indexOf(Object)

    • lastIndexOf

      public int lastIndexOf​(int k)
      Description copied from interface: IntList
      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 IntList
      See Also:
      List.lastIndexOf(Object)

    • addAll

      public boolean addAll​(int i, java.util.Collection<? extends java.lang.Integer> c)
      Specified by:
      addAll in interface java.util.List<java.lang.Integer>

    • 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>)

    • 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, 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
      See Also:
      List.addAll(int,java.util.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)

    • add

      @Deprecated public void add​(int index, java.lang.Integer k)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      add in interface IntList
      Specified by:
      add in interface java.util.List<java.lang.Integer>

    • get

      @Deprecated public java.lang.Integer get​(int index)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      get in interface IntList
      Specified by:
      get in interface java.util.List<java.lang.Integer>

    • add

      @Deprecated public boolean add​(java.lang.Integer k)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      add in interface java.util.Collection<java.lang.Integer>
      Specified by:
      add in interface IntCollection
      Specified by:
      add in interface IntList
      Specified by:
      add in interface java.util.List<java.lang.Integer>
      Overrides:
      add in class AbstractIntCollection

    • set

      @Deprecated public java.lang.Integer set​(int index, java.lang.Integer k)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      set in interface IntList
      Specified by:
      set in interface java.util.List<java.lang.Integer>

    • remove

      @Deprecated public java.lang.Integer remove​(int k)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      remove in interface IntList
      Specified by:
      remove in interface java.util.List<java.lang.Integer>

    • indexOf

      @Deprecated public int indexOf​(java.lang.Object k)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      indexOf in interface IntList
      Specified by:
      indexOf in interface java.util.List<java.lang.Integer>

    • lastIndexOf

      @Deprecated public int lastIndexOf​(java.lang.Object k)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Specified by:
      lastIndexOf in interface IntList
      Specified by:
      lastIndexOf in interface java.util.List<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

    • listIterator

      public IntListIterator listIterator()
      Description copied from interface: IntList
      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>
      See Also:
      List.listIterator()

    • iterator

      public IntListIterator iterator()
      Description copied from interface: IntCollection
      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 IntCollections.EmptyCollection
      Returns:
      a type-specific iterator on the elements of this collection.
      See Also:
      Iterable.iterator()

    • listIterator

      public IntListIterator listIterator​(int i)
      Description copied from interface: IntList
      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>
      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>
      See Also:
      List.subList(int,int)

    • getElements

      public void getElements​(int from, int[] a, int offset, int length)
      Description copied from interface: IntList
      Copies (hopefully quickly) elements of this type-specific list into the given array.
      Specified by:
      getElements in interface IntList
      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 interface: IntList
      Removes (hopefully quickly) elements of this type-specific list.
      Specified by:
      removeElements in interface IntList
      Parameters:
      from - the start index (inclusive).
      to - the end index (exclusive).

    • addElements

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

    • 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
      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 void size​(int s)
      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
      Parameters:
      s - the new size.

    • compareTo

      public int compareTo​(java.util.List<? extends java.lang.Integer> o)
      Specified by:
      compareTo in interface java.lang.Comparable<java.util.List<? extends java.lang.Integer>>

    • clone

      public java.lang.Object clone()

    • hashCode

      public int hashCode()
      Specified by:
      hashCode in interface java.util.Collection<java.lang.Integer>
      Specified by:
      hashCode in interface java.util.List<java.lang.Integer>
      Overrides:
      hashCode in class IntCollections.EmptyCollection

    • equals

      public boolean equals​(java.lang.Object o)
      Specified by:
      equals in interface java.util.Collection<java.lang.Integer>
      Specified by:
      equals in interface java.util.List<java.lang.Integer>
      Overrides:
      equals in class IntCollections.EmptyCollection

    • toString

      public java.lang.String toString()
      Overrides:
      toString in class AbstractIntCollection