Package it.unimi.dsi.fastutil.longs

Class LongArraySet

java.lang.Object
java.util.AbstractCollection<Long>
it.unimi.dsi.fastutil.longs.AbstractLongCollection
it.unimi.dsi.fastutil.longs.AbstractLongSet
it.unimi.dsi.fastutil.longs.LongArraySet
All Implemented Interfaces:
LongCollection, LongIterable, LongSet, Serializable, Cloneable, Iterable<Long>, Collection<Long>, Set<Long>
public class LongArraySet extends AbstractLongSet implements Serializable, Cloneable
A simple, brute-force implementation of a set based on a backing array.

The main purpose of this implementation is that of wrapping cleanly the brute-force approach to the storage of a very small number of items: just put them into an array and scan linearly to find an item.

See Also:

  • Constructor Details

    • LongArraySet

      public LongArraySet(long[] a)
      Creates a new array set using the given backing array. The resulting set will have as many elements as the array.

      It is the responsibility of the caller to ensure that the elements of a are distinct.

      Parameters:
      a - the backing array.

    • LongArraySet

      public LongArraySet()
      Creates a new empty array set.

    • LongArraySet

      public LongArraySet(int capacity)
      Creates a new empty array set of given initial capacity.
      Parameters:
      capacity - the initial capacity.

    • LongArraySet

      public LongArraySet(LongCollection c)
      Creates a new array set copying the contents of a given collection.
      Parameters:
      c - a collection.

    • LongArraySet

      public LongArraySet(Collection<? extends Long> c)
      Creates a new array set copying the contents of a given set.
      Parameters:
      c - a collection.

    • LongArraySet

      public LongArraySet(LongSet c)
      Creates a new array set copying the contents of a given collection.
      Parameters:
      c - a collection.

    • LongArraySet

      public LongArraySet(Set<? extends Long> c)
      Creates a new array set copying the contents of a given set.
      Parameters:
      c - a collection.

    • LongArraySet

      public LongArraySet(long[] a, int size)
      Creates a new array set using the given backing array and the given number of elements of the array.

      It is the responsibility of the caller to ensure that the first size elements of a are distinct.

      Parameters:
      a - the backing array.
      size - the number of valid elements in a.

  • Method Details