Package it.unimi.dsi.fastutil.ints

Class AbstractIntBigList

java.lang.Object
java.util.AbstractCollection<java.lang.Integer>
it.unimi.dsi.fastutil.ints.AbstractIntCollection
it.unimi.dsi.fastutil.ints.AbstractIntBigList
All Implemented Interfaces:
BigList<java.lang.Integer>, IntBigList, IntCollection, IntIterable, IntStack, Size64, Stack<java.lang.Integer>, java.lang.Comparable<BigList<? extends java.lang.Integer>>, java.lang.Iterable<java.lang.Integer>, java.util.Collection<java.lang.Integer>
Direct Known Subclasses:
AbstractIntBigList.IntSubList, IntBigArrayBigList, IntBigLists.ListBigList, IntBigLists.Singleton
public abstract class AbstractIntBigList
extends AbstractIntCollection
implements IntBigList, IntStack
An abstract class providing basic methods for big lists implementing a type-specific big list interface.

Most of the methods in this class are optimized with the assumption that the List will have have constant-time random access. If this is not the case, you should probably at least override listIterator(long) and the xAll() methods (such as addAll(long, java.util.Collection<? extends java.lang.Integer>)) with a more appropriate iteration scheme. Note the subList(long, long) method is cognizant of random-access or not, so that need not be reimplemented.

  • Nested Class Summary

    Nested Classes
    Modifier and Type Class Description
    static class  AbstractIntBigList.IntRandomAccessSubList  
    static class  AbstractIntBigList.IntSubList
    A class implementing a sublist view.

  • Method Summary

    Modifier and Type Method Description
    boolean add​(int k)
    Ensures that this collection contains the specified element (optional operation).
    void add​(long index, int k)
    Inserts the specified element at the specified position in this type-specific big list (optional operation).
    void add​(long index, java.lang.Integer ok)
    Deprecated.
    Please use the corresponding type-specific method instead.
    boolean addAll​(long index, IntCollection 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, 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​(java.util.Collection<? extends java.lang.Integer> c)
    void addElements​(long index, int[][] a)
    Add (hopefully quickly) elements to this type-specific big list.
    void addElements​(long index, int[][] a, long offset, long length)
    Add (hopefully quickly) elements to this type-specific big list.
    void clear()
    int compareTo​(BigList<? extends java.lang.Integer> l)
    Compares this big list to another object.
    boolean contains​(int k)
    Returns true if this list contains the specified element.
    boolean equals​(java.lang.Object o)  
    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.
    java.lang.Integer get​(long index)
    Deprecated.
    Please use the corresponding type-specific method instead.
    void getElements​(long from, int[][] a, long offset, long length)
    Copies (hopefully quickly) elements of this type-specific big list into the given big array.
    int hashCode()
    Returns the hash code for this big list, which is identical to List.hashCode().
    long indexOf​(int 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.
    long indexOf​(java.lang.Object ok)
    Deprecated.
    Please use the corresponding type-specific method instead.
    IntBigListIterator iterator()
    Returns a type-specific iterator on the elements of this collection.
    long lastIndexOf​(int 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.
    long lastIndexOf​(java.lang.Object ok)
    Deprecated.
    Please use the corresponding type-specific method instead.
    IntBigListIterator listIterator()
    Returns a type-specific big-list iterator on this type-specific big list.
    IntBigListIterator listIterator​(long index)
    Returns a type-specific list iterator on this type-specific big list starting at a given index.
    java.lang.Integer peek​(int i)
    Deprecated.
    Please use the corresponding type-specific method instead.
    int peekInt​(int i)
    Peeks at an element on the stack (optional operation).
    java.lang.Integer pop()
    Deprecated.
    Please use the corresponding type-specific method instead.
    int popInt()
    Pops the top off the stack.
    void push​(int o)
    Pushes the given object on the stack.
    void push​(java.lang.Integer o)
    Deprecated.
    Please use the corresponding type-specific method instead.
    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​(long index)
    Deprecated.
    Please use the corresponding type-specific method instead.
    void removeElements​(long from, long to)
    Removes (hopefully quickly) elements of this type-specific big list.
    int removeInt​(long i)
    Removes the element at the specified position.
    int set​(long index, int k)
    Replaces the element at the specified position in this big list with the specified element (optional operation).
    java.lang.Integer set​(long index, java.lang.Integer ok)
    Deprecated.
    Please use the corresponding type-specific method instead.
    void setElements​(long index, int[][] a, long offset, long length)
    Set (hopefully quickly) elements to match the array given.
    int size()
    Deprecated.
    Please use Size64.size64() instead.
    void size​(long size)
    Sets the size of this big list.
    IntBigList 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.
    java.lang.Integer top()
    Deprecated.
    Please use the corresponding type-specific method instead.
    int topInt()
    Peeks at the top of the stack (optional operation).
    java.lang.String toString()  

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

    add, contains, containsAll, containsAll, forEach, remove, removeAll, removeAll, removeIf, retainAll, retainAll, toArray, toIntArray, toIntArray

    Methods inherited from class java.util.AbstractCollection

    isEmpty, toArray, toArray

    Methods inherited from class java.lang.Object

    getClass, notify, notifyAll, wait, wait, wait

    Methods inherited from interface java.util.Collection

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

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

    addAll, addAll, addAll, addAll, getInt, setElements, setElements, spliterator

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

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

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

    forEach, forEach

    Methods inherited from interface it.unimi.dsi.fastutil.Size64

    size64

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

    isEmpty

  • Method Details

    • add

      public void add​(long index, int k)
      Inserts the specified element at the specified position in this type-specific big list (optional operation).
      Specified by:
      add in interface IntBigList
      See Also:
      BigList.add(long,Object)
      Implementation Specification:
      This implementation always throws an UnsupportedOperationException.

    • add

      public boolean add​(int k)
      Ensures that this collection contains the specified element (optional operation).
      Specified by:
      add in interface IntCollection
      Overrides:
      add in class AbstractIntCollection
      See Also:
      Collection.add(Object)
      Implementation Specification:
      This implementation delegates to the type-specific version of BigList.add(long, Object).

    • removeInt

      public int removeInt​(long i)
      Removes the element at the specified position.
      Specified by:
      removeInt in interface IntBigList
      See Also:
      BigList.remove(long)
      Implementation Specification:
      This implementation always throws an UnsupportedOperationException.

    • set

      public int set​(long index, int k)
      Replaces the element at the specified position in this big list with the specified element (optional operation).
      Specified by:
      set in interface IntBigList
      See Also:
      BigList.set(long,Object)
      Implementation Specification:
      This implementation always throws an UnsupportedOperationException.

    • addAll

      public boolean addAll​(long index, java.util.Collection<? extends java.lang.Integer> c)
      Adds all of the elements in the specified collection to this list (optional operation).
      Specified by:
      addAll in interface BigList<java.lang.Integer>
      Parameters:
      index - index at which to insert the first element from the specified collection.
      c - collection containing elements to be added to this big list.
      Returns:
      true if this big list changed as a result of the call
      See Also:
      List.addAll(int, Collection)

    • addAll

      public boolean addAll​(java.util.Collection<? extends java.lang.Integer> c)
      Specified by:
      addAll in interface java.util.Collection<java.lang.Integer>
      Overrides:
      addAll in class AbstractIntCollection
      Implementation Specification:
      This implementation delegates to the type-specific version of BigList.addAll(long, Collection).

    • iterator

      public IntBigListIterator iterator()
      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 IntBigList
      Specified by:
      iterator in interface IntCollection
      Specified by:
      iterator in interface IntIterable
      Specified by:
      iterator in interface java.lang.Iterable<java.lang.Integer>
      Specified by:
      iterator in class AbstractIntCollection
      Returns:
      a type-specific iterator on the elements of this collection.
      See Also:
      Iterable.iterator()
      Implementation Specification:
      This implementation delegates to listIterator().

    • listIterator

      public IntBigListIterator listIterator()
      Returns a type-specific big-list iterator on this type-specific big list.
      Specified by:
      listIterator in interface BigList<java.lang.Integer>
      Specified by:
      listIterator in interface IntBigList
      Returns:
      a big-list iterator over the elements in this big list.
      See Also:
      BigList.listIterator()
      Implementation Specification:
      This implementation delegates to listIterator(0).

    • listIterator

      public IntBigListIterator listIterator​(long index)
      Returns a type-specific list iterator on this type-specific big list starting at a given index.
      Specified by:
      listIterator in interface BigList<java.lang.Integer>
      Specified by:
      listIterator in interface IntBigList
      Parameters:
      index - index of first element to be returned from the big-list iterator.
      Returns:
      a big-list iterator of the elements in this big list, starting at the specified position in this big list.
      See Also:
      BigList.listIterator(long)
      Implementation Specification:
      This implementation is based on the random-access methods.

    • contains

      public boolean contains​(int k)
      Returns true if this list contains the specified element.
      Specified by:
      contains in interface IntCollection
      Overrides:
      contains in class AbstractIntCollection
      See Also:
      Collection.contains(Object)
      Implementation Specification:
      This implementation delegates to indexOf().

    • indexOf

      public long indexOf​(int k)
      Description copied from interface: IntBigList
      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.
      Specified by:
      indexOf in interface IntBigList
      See Also:
      BigList.indexOf(Object)

    • lastIndexOf

      public long lastIndexOf​(int k)
      Description copied from interface: IntBigList
      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.
      Specified by:
      lastIndexOf in interface IntBigList
      See Also:
      BigList.lastIndexOf(Object)

    • size

      public void size​(long size)
      Description copied from interface: BigList
      Sets the size of this big 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 BigList<java.lang.Integer>
      Parameters:
      size - the new size.

    • subList

      public IntBigList subList​(long from, long to)
      Description copied from interface: IntBigList
      Returns a type-specific view of the portion of this type-specific big list from the index from, inclusive, to the index to, exclusive.
      Specified by:
      subList in interface BigList<java.lang.Integer>
      Specified by:
      subList in interface IntBigList
      Parameters:
      from - the starting element (inclusive).
      to - the ending element (exclusive).
      Returns:
      a big sublist view of this big list.
      See Also:
      BigList.subList(long,long)

    • forEach

      public 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.
      Specified by:
      forEach in interface IntIterable
      Parameters:
      action - the action to be performed for each element.
      See Also:
      Iterable.forEach(java.util.function.Consumer)
      Implementation Specification:
      If this list is RandomAccess, will iterate using a for loop and the type-specific List.get(int) method. Otherwise it will fallback to using the iterator based loop implementation from the superinterface.

    • removeElements

      public void removeElements​(long from, long to)
      Removes (hopefully quickly) elements of this type-specific big 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 IntBigList
      Parameters:
      from - the start index (inclusive).
      to - the end index (exclusive).

    • addElements

      public void addElements​(long index, int[][] a, long offset, long length)
      Add (hopefully quickly) elements to this type-specific big 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 IntBigList
      Parameters:
      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.

    • addElements

      public void addElements​(long index, int[][] a)
      Add (hopefully quickly) elements to this type-specific big list.
      Specified by:
      addElements in interface IntBigList
      Parameters:
      index - the index at which to add elements.
      a - the big array containing the elements.
      Implementation Specification:
      This implementation delegates to the analogous method for big-array fragments.

    • getElements

      public void getElements​(long from, int[][] a, long offset, long length)
      Copies (hopefully quickly) elements of this type-specific big list into the given big 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 IntBigList
      Parameters:
      from - the start index (inclusive).
      a - the destination big array.
      offset - the offset into the destination big array where to store the first element copied.
      length - the number of elements to be copied.

    • setElements

      public void setElements​(long index, int[][] a, long offset, long length)
      Description copied from interface: IntBigList
      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);
 long i = 0;
 while (i < length) {
   iter.next();
   iter.set(BigArrays.get(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 IntBigList
      Parameters:
      index - the index at which to start setting elements.
      a - the big array containing the elements.
      offset - the offset of the first element to add.
      length - the number of elements to add.

    • clear

      public void clear()
      Specified by:
      clear in interface java.util.Collection<java.lang.Integer>
      Overrides:
      clear in class java.util.AbstractCollection<java.lang.Integer>
      Implementation Specification:
      This implementation delegates to removeElements(long, long).

    • size

      @Deprecated public int size()
      Deprecated.
      Please use Size64.size64() instead.
      Returns the size of this data structure, minimized with Integer.MAX_VALUE.

      This default implementation follows the definition above, which is compatible with Collection.size().

      Specified by:
      size in interface BigList<java.lang.Integer>
      Specified by:
      size in interface java.util.Collection<java.lang.Integer>
      Specified by:
      size in interface Size64
      Specified by:
      size in class java.util.AbstractCollection<java.lang.Integer>
      Returns:
      the size of this data structure, minimized with Integer.MAX_VALUE.
      See Also:
      Collection.size()
      Implementation Specification:
      This implementation delegates to Size64.size64().

    • hashCode

      public int hashCode()
      Returns the hash code for this big list, which is identical to List.hashCode().
      Specified by:
      hashCode in interface java.util.Collection<java.lang.Integer>
      Overrides:
      hashCode in class java.lang.Object
      Returns:
      the hash code for this big list.

    • equals

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

    • compareTo

      public int compareTo​(BigList<? extends java.lang.Integer> l)
      Compares this big list to another object. If the argument is a BigList, this method performs a lexicographical comparison; otherwise, it throws a ClassCastException.
      Specified by:
      compareTo in interface java.lang.Comparable<BigList<? extends java.lang.Integer>>
      Parameters:
      l - a big list.
      Returns:
      if the argument is a BigList, a negative integer, zero, or a positive integer as this list is lexicographically less than, equal to, or greater than the argument.
      Throws:
      java.lang.ClassCastException - if the argument is not a big list.

    • push

      public void push​(int o)
      Description copied from interface: IntStack
      Pushes the given object on the stack.
      Specified by:
      push in interface IntStack
      Parameters:
      o - the object to push on the stack.
      See Also:
      Stack.push(Object)

    • popInt

      public int popInt()
      Description copied from interface: IntStack
      Pops the top off the stack.
      Specified by:
      popInt in interface IntStack
      Returns:
      the top of the stack.
      See Also:
      Stack.pop()

    • topInt

      public int topInt()
      Description copied from interface: IntStack
      Peeks at the top of the stack (optional operation).
      Specified by:
      topInt in interface IntStack
      Returns:
      the top of the stack.
      See Also:
      Stack.top()

    • peekInt

      public int peekInt​(int i)
      Description copied from interface: IntStack
      Peeks at an element on the stack (optional operation).
      Specified by:
      peekInt in interface IntStack
      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​(int k)
      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 AbstractIntCollection
      See Also:
      Collection.remove(Object)
      Implementation Specification:
      This implementation delegates to indexOf().

    • addAll

      public boolean addAll​(long index, IntCollection c)
      Inserts all of the elements in the specified type-specific collection into this type-specific big list at the specified position (optional operation).
      Specified by:
      addAll in interface IntBigList
      See Also:
      List.addAll(int,java.util.Collection)
      Implementation Specification:
      This implementation delegates to the type-specific version of addAll(long, Collection).

    • addAll

      public boolean addAll​(IntCollection c)
      Adds all elements of the given type-specific collection to this collection.
      Specified by:
      addAll in interface IntCollection
      Overrides:
      addAll in class AbstractIntCollection
      Parameters:
      c - a type-specific collection.
      Returns:
      true if this collection changed as a result of the call.
      See Also:
      Collection.addAll(Collection)
      Implementation Specification:
      This implementation delegates to the type-specific version of addAll(long, Collection).

    • add

      @Deprecated public void add​(long index, java.lang.Integer ok)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Inserts the specified element at the specified position in this big list (optional operation).
      Specified by:
      add in interface BigList<java.lang.Integer>
      Specified by:
      add in interface IntBigList
      Parameters:
      index - a position in the big list.
      ok - an element to be inserted.
      See Also:
      List.add(int,Object)
      Implementation Specification:
      This implementation delegates to the corresponding type-specific method.

    • set

      @Deprecated public java.lang.Integer set​(long index, java.lang.Integer ok)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Replaces the element at the specified position in this big list with the specified element (optional operation).
      Specified by:
      set in interface BigList<java.lang.Integer>
      Specified by:
      set in interface IntBigList
      Parameters:
      index - a position in the big list.
      ok - the element to be stored at the specified position.
      Returns:
      the element previously at the specified positions.
      See Also:
      List.set(int,Object)
      Implementation Specification:
      This implementation delegates to the corresponding type-specific method.

    • get

      @Deprecated public java.lang.Integer get​(long index)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Returns the element at the specified position.
      Specified by:
      get in interface BigList<java.lang.Integer>
      Specified by:
      get in interface IntBigList
      Parameters:
      index - a position in the big list.
      Returns:
      the element at the specified position.
      See Also:
      List.get(int)
      Implementation Specification:
      This implementation delegates to the corresponding type-specific method.

    • indexOf

      @Deprecated public long indexOf​(java.lang.Object ok)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Returns the index of the first occurrence of the specified element in this big list, or -1 if this big list does not contain the element.
      Specified by:
      indexOf in interface BigList<java.lang.Integer>
      Specified by:
      indexOf in interface IntBigList
      Parameters:
      ok - the object to search for.
      Returns:
      the index of the first occurrence of the specified element in this big list, or -1 if this big list does not contain the element.
      See Also:
      List.indexOf(Object)
      Implementation Specification:
      This implementation delegates to the corresponding type-specific method.

    • lastIndexOf

      @Deprecated public long lastIndexOf​(java.lang.Object ok)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Returns the index of the last occurrence of the specified element in this big list, or -1 if this big list does not contain the element.
      Specified by:
      lastIndexOf in interface BigList<java.lang.Integer>
      Specified by:
      lastIndexOf in interface IntBigList
      Parameters:
      ok - the object to search for.
      Returns:
      the index of the last occurrence of the specified element in this big list, or -1 if this big list does not contain the element.
      See Also:
      List.lastIndexOf(Object)
      Implementation Specification:
      This implementation delegates to the corresponding type-specific method.

    • remove

      @Deprecated public java.lang.Integer remove​(long index)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Removes the element at the specified position.
      Specified by:
      remove in interface BigList<java.lang.Integer>
      Specified by:
      remove in interface IntBigList
      Parameters:
      index - a position in the big list.
      Returns:
      the element previously at the specified position.
      See Also:
      List.remove(int)
      Implementation Specification:
      This implementation delegates to the corresponding type-specific method.

    • push

      @Deprecated public void push​(java.lang.Integer o)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Pushes the given object on the stack.

      This default implementation delegates to the corresponding type-specific method.

      Specified by:
      push in interface IntStack
      Specified by:
      push in interface Stack<java.lang.Integer>
      Parameters:
      o - the object that will become the new top of the stack.
      Implementation Specification:
      This implementation delegates to the corresponding type-specific method.

    • pop

      @Deprecated public java.lang.Integer pop()
      Deprecated.
      Please use the corresponding type-specific method instead.
      Pops the top off the stack.

      This default implementation delegates to the corresponding type-specific method.

      Specified by:
      pop in interface IntStack
      Specified by:
      pop in interface Stack<java.lang.Integer>
      Returns:
      the top of the stack.
      Implementation Specification:
      This implementation delegates to the corresponding type-specific method.

    • top

      @Deprecated public java.lang.Integer top()
      Deprecated.
      Please use the corresponding type-specific method instead.
      Peeks at the top of the stack (optional operation).

      This default implementation returns peek(0).

      This default implementation delegates to the corresponding type-specific method.

      Specified by:
      top in interface IntStack
      Specified by:
      top in interface Stack<java.lang.Integer>
      Returns:
      the top of the stack.
      Implementation Specification:
      This implementation delegates to the corresponding type-specific method.

    • peek

      @Deprecated public java.lang.Integer peek​(int i)
      Deprecated.
      Please use the corresponding type-specific method instead.
      Peeks at an element on the stack (optional operation).

      This default implementation just throws an UnsupportedOperationException.

      This default implementation delegates to the corresponding type-specific method.

      Specified by:
      peek in interface IntStack
      Specified by:
      peek in interface Stack<java.lang.Integer>
      Parameters:
      i - an index from the stop of the stack (0 represents the top).
      Returns:
      the i-th element on the stack.
      Implementation Specification:
      This implementation delegates to the corresponding type-specific method.

    • toString

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