Class TCharDoubleHashMap

All Implemented Interfaces:
TCharDoubleMap, Externalizable, Serializable

public class TCharDoubleHashMap extends TCharDoubleHash implements TCharDoubleMap, Externalizable
An open addressed Map implementation for char keys and double values.
See Also:
  • Field Details

    • _values

      protected transient double[] _values
      the values of the map
  • Constructor Details

    • TCharDoubleHashMap

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

      public TCharDoubleHashMap(int initialCapacity)
      Creates a new TCharDoubleHashMap instance with a prime capacity equal to or greater than initialCapacity and with the default load factor.
      Parameters:
      initialCapacity - an int value
    • TCharDoubleHashMap

      public TCharDoubleHashMap(int initialCapacity, float loadFactor)
      Creates a new TCharDoubleHashMap instance with a prime capacity equal to or greater than initialCapacity and with the specified load factor.
      Parameters:
      initialCapacity - an int value
      loadFactor - a float value
    • TCharDoubleHashMap

      public TCharDoubleHashMap(int initialCapacity, float loadFactor, char noEntryKey, double noEntryValue)
      Creates a new TCharDoubleHashMap instance with a prime capacity equal to or greater than initialCapacity and with the specified load factor.
      Parameters:
      initialCapacity - an int value
      loadFactor - a float value
      noEntryKey - a char value that represents null for the Key set.
      noEntryValue - a double value that represents null for the Value set.
    • TCharDoubleHashMap

      public TCharDoubleHashMap(char[] keys, double[] values)
      Creates a new TCharDoubleHashMap instance containing all of the entries in the map passed in.
      Parameters:
      keys - a char array containing the keys for the matching values.
      values - a double array containing the values.
    • TCharDoubleHashMap

      public TCharDoubleHashMap(TCharDoubleMap map)
      Creates a new TCharDoubleHashMap instance containing all of the entries in the map passed in.
      Parameters:
      map - a TCharDoubleMap that will be duplicated.
  • Method Details

    • setUp

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

      protected void rehash(int newCapacity)
      Rehashes the set.
      Specified by:
      rehash in class THash
      Parameters:
      newCapacity - an int value
    • put

      public double put(char key, double value)
      Inserts a key/value pair into the map.
      Specified by:
      put in interface TCharDoubleMap
      Returns:
      the previous value associated with key, or the "no entry" value if none was found (see TCharDoubleMap.getNoEntryValue()).
    • putIfAbsent

      public double putIfAbsent(char key, double value)
      Inserts a key/value pair into the map if the specified key is not already associated with a value.
      Specified by:
      putIfAbsent in interface TCharDoubleMap
      Returns:
      the previous value associated with key, or the "no entry" value if none was found (see TCharDoubleMap.getNoEntryValue()).
    • putAll

      public void putAll(Map<? extends Character,? extends Double> map)
      Put all the entries from the given Map into this map.
      Specified by:
      putAll in interface TCharDoubleMap
      Parameters:
      map - The Map from which entries will be obtained to put into this map.
    • putAll

      public void putAll(TCharDoubleMap map)
      Put all the entries from the given map into this map.
      Specified by:
      putAll in interface TCharDoubleMap
      Parameters:
      map - The map from which entries will be obtained to put into this map.
    • get

      public double get(char key)
      Retrieves the value for key.
      Specified by:
      get in interface TCharDoubleMap
      Returns:
      the previous value associated with key, or the "no entry" value if none was found (see TCharDoubleMap.getNoEntryValue()).
    • clear

      public void clear()
      Empties the collection.
      Specified by:
      clear in interface TCharDoubleMap
      Overrides:
      clear in class THash
    • isEmpty

      public boolean isEmpty()
      Tells whether this set is currently holding any elements.
      Specified by:
      isEmpty in interface TCharDoubleMap
      Overrides:
      isEmpty in class THash
      Returns:
      a boolean value
    • remove

      public double remove(char key)
      Deletes a key/value pair from the map.
      Specified by:
      remove in interface TCharDoubleMap
      Parameters:
      key - an char value
      Returns:
      the previous value associated with key, or the "no entry" value if none was found (see TCharDoubleMap.getNoEntryValue()).
    • removeAt

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

      public TCharSet keySet()
      Returns the keys of the map as a TCharSet
      Specified by:
      keySet in interface TCharDoubleMap
      Returns:
      the keys of the map as a TCharSet
    • keys

      public char[] keys()
      Returns the keys of the map as an array of char values.
      Specified by:
      keys in interface TCharDoubleMap
      Returns:
      the keys of the map as an array of char values.
    • keys

      public char[] keys(char[] array)
      Returns the keys of the map.
      Specified by:
      keys in interface TCharDoubleMap
      Parameters:
      array - the array into which the elements of the list are to be stored, if it is big enough; otherwise, a new array of the same type is allocated for this purpose.
      Returns:
      the keys of the map as an array.
    • valueCollection

      public TDoubleCollection valueCollection()
      Returns the values of the map as a TDoubleCollection
      Specified by:
      valueCollection in interface TCharDoubleMap
      Returns:
      the values of the map as a TDoubleCollection
    • values

      public double[] values()
      Returns the values of the map as an array of #e# values.
      Specified by:
      values in interface TCharDoubleMap
      Returns:
      the values of the map as an array of #e# values.
    • values

      public double[] values(double[] array)
      Returns the values of the map using an existing array.
      Specified by:
      values in interface TCharDoubleMap
      Parameters:
      array - the array into which the elements of the list are to be stored, if it is big enough; otherwise, a new array of the same type is allocated for this purpose.
      Returns:
      the values of the map as an array of #e# values.
    • containsValue

      public boolean containsValue(double val)
      Checks for the presence of val in the values of the map.
      Specified by:
      containsValue in interface TCharDoubleMap
    • containsKey

      public boolean containsKey(char key)
      Checks for the present of key in the keys of the map.
      Specified by:
      containsKey in interface TCharDoubleMap
    • iterator

      public TCharDoubleIterator iterator()
      Specified by:
      iterator in interface TCharDoubleMap
      Returns:
      a TCharDoubleIterator with access to this map's keys and values
    • forEachKey

      public boolean forEachKey(TCharProcedure procedure)
      Executes procedure for each key in the map.
      Specified by:
      forEachKey in interface TCharDoubleMap
      Parameters:
      procedure - a TCharProcedure value
      Returns:
      false if the loop over the keys terminated because the procedure returned false for some key.
    • forEachValue

      public boolean forEachValue(TDoubleProcedure procedure)
      Executes procedure for each value in the map.
      Specified by:
      forEachValue in interface TCharDoubleMap
      Parameters:
      procedure - a T#F#Procedure value
      Returns:
      false if the loop over the values terminated because the procedure returned false for some value.
    • forEachEntry

      public boolean forEachEntry(TCharDoubleProcedure procedure)
      Executes procedure for each key/value entry in the map.
      Specified by:
      forEachEntry in interface TCharDoubleMap
      Parameters:
      procedure - a TOCharDoubleProcedure value
      Returns:
      false if the loop over the entries terminated because the procedure returned false for some entry.
    • transformValues

      public void transformValues(TDoubleFunction function)
      Transform the values in this map using function.
      Specified by:
      transformValues in interface TCharDoubleMap
      Parameters:
      function - a TDoubleFunction value
    • retainEntries

      public boolean retainEntries(TCharDoubleProcedure procedure)
      Retains only those entries in the map for which the procedure returns a true value.
      Specified by:
      retainEntries in interface TCharDoubleMap
      Parameters:
      procedure - determines which entries to keep
      Returns:
      true if the map was modified.
    • increment

      public boolean increment(char key)
      Increments the primitive value mapped to key by 1
      Specified by:
      increment in interface TCharDoubleMap
      Parameters:
      key - the key of the value to increment
      Returns:
      true if a mapping was found and modified.
    • adjustValue

      public boolean adjustValue(char key, double amount)
      Adjusts the primitive value mapped to key.
      Specified by:
      adjustValue in interface TCharDoubleMap
      Parameters:
      key - the key of the value to increment
      amount - the amount to adjust the value by.
      Returns:
      true if a mapping was found and modified.
    • adjustOrPutValue

      public double adjustOrPutValue(char key, double adjust_amount, double put_amount)
      Adjusts the primitive value mapped to the key if the key is present in the map. Otherwise, the put_amount is put in the map.
      Specified by:
      adjustOrPutValue in interface TCharDoubleMap
      Parameters:
      key - the key of the value to increment
      adjust_amount - the amount to adjust the value by
      put_amount - the value put into the map if the key is not present
      Returns:
      the value present in the map after the adjustment or put operation
    • equals

      public boolean equals(Object other)
      Overrides:
      equals in class Object
    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object
    • toString

      public String toString()
      Overrides:
      toString in class Object
    • writeExternal

      public void writeExternal(ObjectOutput out) throws IOException
      Specified by:
      writeExternal in interface Externalizable
      Overrides:
      writeExternal in class TCharDoubleHash
      Throws:
      IOException
    • readExternal

      public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
      Specified by:
      readExternal in interface Externalizable
      Overrides:
      readExternal in class TCharDoubleHash
      Throws:
      IOException
      ClassNotFoundException