Package gnu.trove

Class TDoubleHash

    • Field Detail

      • _set

        protected transient double[] _set
        the set of doubles

      • _hashingStrategy

        protected TDoubleHashingStrategy _hashingStrategy
        strategy used to hash values in this collection

    • Constructor Detail

      • TDoubleHash

        public TDoubleHash()
        Creates a new TDoubleHash instance with the default capacity and load factor.

      • TDoubleHash

        public TDoubleHash​(int initialCapacity)
        Creates a new TDoubleHash instance whose capacity is the next highest prime above initialCapacity + 1 unless that value is already prime.
        Parameters:
        initialCapacity - an int value

      • TDoubleHash

        public TDoubleHash​(int initialCapacity,
                   float loadFactor)
        Creates a new TDoubleHash instance with a prime value at or near the specified capacity and load factor.
        Parameters:
        initialCapacity - used to find a prime capacity for the table.
        loadFactor - used to calculate the threshold over which rehashing takes place.

      • TDoubleHash

        public TDoubleHash​(TDoubleHashingStrategy strategy)
        Creates a new TDoubleHash instance with the default capacity and load factor.
        Parameters:
        strategy - used to compute hash codes and to compare keys.

      • TDoubleHash

        public TDoubleHash​(int initialCapacity,
                   TDoubleHashingStrategy strategy)
        Creates a new TDoubleHash instance whose capacity is the next highest prime above initialCapacity + 1 unless that value is already prime.
        Parameters:
        initialCapacity - an int value
        strategy - used to compute hash codes and to compare keys.

      • TDoubleHash

        public TDoubleHash​(int initialCapacity,
                   float loadFactor,
                   TDoubleHashingStrategy strategy)
        Creates a new TDoubleHash instance with a prime value at or near the specified capacity and load factor.
        Parameters:
        initialCapacity - used to find a prime capacity for the table.
        loadFactor - used to calculate the threshold over which rehashing takes place.
        strategy - used to compute hash codes and to compare keys.

    • Method Detail

      • clone

        public java.lang.Object clone()
        Overrides:
        clone in class TPrimitiveHash
        Returns:
        a deep clone of this collection

      • setUp

        protected int setUp​(int initialCapacity)
        initializes the hashtable to a prime capacity which is at least initialCapacity + 1.
        Overrides:
        setUp in class TPrimitiveHash
        Parameters:
        initialCapacity - an int value
        Returns:
        the actual capacity chosen

      • contains

        public boolean contains​(double val)
        Searches the set for val
        Parameters:
        val - an double value
        Returns:
        a boolean value

      • forEach

        public boolean forEach​(TDoubleProcedure procedure)
        Executes procedure for each element in the set.
        Parameters:
        procedure - a TObjectProcedure value
        Returns:
        false if the loop over the set terminated because the procedure returned false for some value.

      • removeAt

        protected void removeAt​(int index)
        Releases the element currently stored at index.
        Overrides:
        removeAt in class TPrimitiveHash
        Parameters:
        index - an int value

      • index

        protected int index​(double val)
        Locates the index of val.
        Parameters:
        val - an double value
        Returns:
        the index of val or -1 if it isn't in the set.

      • insertionIndex

        protected int insertionIndex​(double val)
        Locates the index at which val can be inserted. if there is already a value equal()ing val in the set, returns that value as a negative integer.
        Parameters:
        val - an double value
        Returns:
        an int value

      • computeHashCode

        public final int computeHashCode​(double val)
        Default implementation of TDoubleHashingStrategy: delegates hashing to HashFunctions.hash(double).
        Specified by:
        computeHashCode in interface TDoubleHashingStrategy
        Parameters:
        val - the value to hash
        Returns:
        the hashcode.