Class TwoSizesLongBigList

java.lang.Object
java.util.AbstractCollection<Long>
it.unimi.dsi.fastutil.longs.AbstractLongCollection
it.unimi.dsi.fastutil.longs.AbstractLongBigList
it.unimi.dsi.sux4j.util.TwoSizesLongBigList
All Implemented Interfaces:
it.unimi.dsi.fastutil.BigList<Long>, it.unimi.dsi.fastutil.longs.LongBigList, it.unimi.dsi.fastutil.longs.LongCollection, it.unimi.dsi.fastutil.longs.LongIterable, it.unimi.dsi.fastutil.longs.LongStack, it.unimi.dsi.fastutil.Size64, it.unimi.dsi.fastutil.Stack<Long>, Serializable, Comparable<it.unimi.dsi.fastutil.BigList<? extends Long>>, Iterable<Long>, Collection<Long>
public class TwoSizesLongBigList extends it.unimi.dsi.fastutil.longs.AbstractLongBigList implements Serializable
A compressed big list of longs; small elements and large elements are stored separately, using two different, optimally chosen bit sizes.

Instances of this class store in a compacted form a list of natural numbers. Values are provided either through an iterable object. You will obtain a reduction in size only if the distribution of the values of the list is skewed towards small values.

Implementation details

Instances of this class store elements in two different LongArrayBitVector-based lists—one for large values and one for small values. The threshold between large and small is established by measuring at construction time the most proficuous choice. A ranking structure built on a marker array (recording which elements are stored in the large list) provides access of the correct element in each array.

See Also:

  • Nested Class Summary

    Nested classes/interfaces inherited from class it.unimi.dsi.fastutil.longs.AbstractLongBigList

    it.unimi.dsi.fastutil.longs.AbstractLongBigList.LongRandomAccessSubList, it.unimi.dsi.fastutil.longs.AbstractLongBigList.LongSubList

  • Constructor Summary

    Constructors
    Constructor
    Description
    TwoSizesLongBigList(it.unimi.dsi.fastutil.bytes.ByteIterable elements)
    Builds a new two-sizes long big list using a given iterable object.
    TwoSizesLongBigList(it.unimi.dsi.fastutil.ints.IntIterable elements)
    Builds a new two-sizes long big list using a given iterable object.
    TwoSizesLongBigList(it.unimi.dsi.fastutil.longs.LongIterable elements)
    Builds a new two-sizes long big list using a given iterable object.
    TwoSizesLongBigList(it.unimi.dsi.fastutil.shorts.ShortIterable elements)
    Builds a new two-sizes long big list using a given iterable object.

  • Method Summary

    Modifier and Type
    Method
    Description
    long
    getLong(long index)
     
    long
    numBits()
     
    long
    size64()
     

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

    add, add, add, addAll, addAll, addAll, addAll, addElements, addElements, clear, compareTo, contains, ensureIndex, ensureRestrictedIndex, equals, forEach, get, getElements, hashCode, indexOf, indexOf, iterator, lastIndexOf, lastIndexOf, listIterator, listIterator, peek, peekLong, pop, popLong, push, push, rem, remove, removeElements, removeLong, set, set, setElements, size, size, subList, top, topLong, toString

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

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

    Methods inherited from class AbstractCollection

    isEmpty, toArray, toArray

    Methods inherited from class Object

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

    Methods inherited from interface Collection

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

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

    addAll, addAll, addAll, addAll, getElements, setElements, setElements, spliterator

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

    add, contains, containsAll, longIterator, longParallelStream, longSpliterator, longStream, parallelStream, remove, removeAll, removeIf, removeIf, removeIf, retainAll, stream, toArray, toLongArray, toLongArray

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

    forEach, forEach

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

    isEmpty

  • Constructor Details

    • TwoSizesLongBigList

      public TwoSizesLongBigList(it.unimi.dsi.fastutil.ints.IntIterable elements)
      Builds a new two-sizes long big list using a given iterable object.
      Parameters:
      elements - an iterable object.

    • TwoSizesLongBigList

      public TwoSizesLongBigList(it.unimi.dsi.fastutil.shorts.ShortIterable elements)
      Builds a new two-sizes long big list using a given iterable object.
      Parameters:
      elements - an iterable object.

    • TwoSizesLongBigList

      public TwoSizesLongBigList(it.unimi.dsi.fastutil.bytes.ByteIterable elements)
      Builds a new two-sizes long big list using a given iterable object.
      Parameters:
      elements - an iterable object.

    • TwoSizesLongBigList

      public TwoSizesLongBigList(it.unimi.dsi.fastutil.longs.LongIterable elements)
      Builds a new two-sizes long big list using a given iterable object.
      Parameters:
      elements - an iterable object.

  • Method Details

    • getLong

      public long getLong(long index)
      Specified by:
      getLong in interface it.unimi.dsi.fastutil.longs.LongBigList

    • size64

      public long size64()
      Specified by:
      size64 in interface it.unimi.dsi.fastutil.Size64

    • numBits

      public long numBits()