Class Int2IntArrayMap

    • Constructor Detail

      • Int2IntArrayMap

        public Int2IntArrayMap​(int[] key,
                               int[] value)
        Creates a new empty array map with given key and value backing arrays. The resulting map will have as many entries as the given arrays.

        It is responsibility of the caller that the elements of key are distinct.

        Parameters:
        key - the key array.
        value - the value array (it must have the same length as key).
      • Int2IntArrayMap

        public Int2IntArrayMap()
        Creates a new empty array map.
      • Int2IntArrayMap

        public Int2IntArrayMap​(int capacity)
        Creates a new empty array map of given capacity.
        Parameters:
        capacity - the initial capacity.
      • Int2IntArrayMap

        public Int2IntArrayMap​(Int2IntMap m)
        Creates a new empty array map copying the entries of a given map.
        Parameters:
        m - a map.
      • Int2IntArrayMap

        public Int2IntArrayMap​(Map<? extends Integer,​? extends Integer> m)
        Creates a new empty array map copying the entries of a given map.
        Parameters:
        m - a map.
      • Int2IntArrayMap

        public Int2IntArrayMap​(int[] key,
                               int[] value,
                               int size)
        Creates a new array map with given key and value backing arrays, using the given number of elements.

        It is responsibility of the caller that the first size elements of key are distinct.

        Parameters:
        key - the key array.
        value - the value array (it must have the same length as key).
        size - the number of valid elements in key and value.
    • Method Detail

      • int2IntEntrySet

        public Int2IntMap.FastEntrySet int2IntEntrySet()
        Description copied from interface: Int2IntMap
        Returns a type-specific set view of the mappings contained in this map.

        This method is necessary because there is no inheritance along type parameters: it is thus impossible to strengthen Map.entrySet() so that it returns an ObjectSet of type-specific entries (the latter makes it possible to access keys and values with type-specific methods).

        Specified by:
        int2IntEntrySet in interface Int2IntMap
        Returns:
        a type-specific set view of the mappings contained in this map.
        See Also:
        Map.entrySet()
      • keySet

        public IntSet keySet()
        Description copied from class: AbstractInt2IntMap
        Returns a type-specific-set view of the keys of this map.

        The view is backed by the set returned by Map.entrySet(). Note that no attempt is made at caching the result of this method, as this would require adding some attributes that lightweight implementations would not need. Subclasses may easily override this policy by calling this method and caching the result, but implementors are encouraged to write more efficient ad-hoc implementations.

        Specified by:
        keySet in interface Int2IntMap
        Specified by:
        keySet in interface Map<Integer,​Integer>
        Overrides:
        keySet in class AbstractInt2IntMap
        Returns:
        a set view of the keys of this map; it may be safely cast to a type-specific interface.
        See Also:
        Map.keySet()
      • values

        public IntCollection values()
        Description copied from class: AbstractInt2IntMap
        Returns a type-specific-set view of the values of this map.

        The view is backed by the set returned by Map.entrySet(). Note that no attempt is made at caching the result of this method, as this would require adding some attributes that lightweight implementations would not need. Subclasses may easily override this policy by calling this method and caching the result, but implementors are encouraged to write more efficient ad-hoc implementations.

        Specified by:
        values in interface Int2IntMap
        Specified by:
        values in interface Map<Integer,​Integer>
        Overrides:
        values in class AbstractInt2IntMap
        Returns:
        a set view of the values of this map; it may be safely cast to a type-specific interface.
        See Also:
        Map.values()
      • clone

        public Int2IntArrayMap clone()
        Returns a deep copy of this map.

        This method performs a deep copy of this hash map; the data stored in the map, however, is not cloned. Note that this makes a difference only for object keys.

        Returns:
        a deep copy of this map.