Package it.unimi.dsi.fastutil.doubles

Class DoubleArraySet

java.lang.Object
java.util.AbstractCollection<Double>
it.unimi.dsi.fastutil.doubles.AbstractDoubleCollection
it.unimi.dsi.fastutil.doubles.AbstractDoubleSet
it.unimi.dsi.fastutil.doubles.DoubleArraySet
All Implemented Interfaces:
DoubleCollection, DoubleIterable, DoubleSet, Serializable, Cloneable, Iterable<Double>, Collection<Double>, Set<Double>
public class DoubleArraySet extends AbstractDoubleSet 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

    • DoubleArraySet

      public DoubleArraySet(double[] 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.

    • DoubleArraySet

      public DoubleArraySet()
      Creates a new empty array set.

    • DoubleArraySet

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

    • DoubleArraySet

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

    • DoubleArraySet

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

    • DoubleArraySet

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

    • DoubleArraySet

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

    • DoubleArraySet

      public DoubleArraySet(double[] 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