public class Long2IntArrayMap extends AbstractLong2IntMap implements Serializable, Cloneable
The main purpose of this implementation is that of wrapping cleanly the brute-force approach to the storage of a very small number of pairs: just put them into two parallel arrays and scan linearly to find an item.
AbstractLong2IntMap.BasicEntryLong2IntMap.Entry, Long2IntMap.FastEntrySetdefRetValue| Constructor and Description |
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Long2IntArrayMap()
Creates a new empty array map.
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Long2IntArrayMap(int capacity)
Creates a new empty array map of given capacity.
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Long2IntArrayMap(long[] key,
int[] value)
Creates a new empty array map with given key and value backing arrays.
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Long2IntArrayMap(long[] key,
int[] value,
int size)
Creates a new array map with given key and value backing arrays, using the given number of elements.
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Long2IntArrayMap(Long2IntMap m)
Creates a new empty array map copying the entries of a given map.
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Long2IntArrayMap(Map<? extends Long,? extends Integer> m)
Creates a new empty array map copying the entries of a given map.
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| Modifier and Type | Method and Description |
|---|---|
void |
clear()
Removes all associations from this function (optional operation).
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Long2IntArrayMap |
clone()
Returns a deep copy of this map.
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boolean |
containsKey(long k)
Checks whether the given value is contained in
AbstractLong2IntMap.keySet(). |
boolean |
containsValue(int v)
Checks whether the given value is contained in
AbstractLong2IntMap.values(). |
int |
get(long k)
Returns the value to which the given key is mapped.
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boolean |
isEmpty() |
LongSet |
keySet()
Returns a type-specific-set view of the keys of this map.
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Long2IntMap.FastEntrySet |
long2IntEntrySet()
Returns a type-specific set view of the mappings contained in this map.
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int |
put(long k,
int v)
Adds a pair to the map.
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int |
remove(long k)
Removes the mapping with the given key.
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int |
size()
Returns the intended number of keys in this function, or -1 if no such number exists.
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IntCollection |
values()
Returns a type-specific-set view of the values of this map.
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containsValue, entrySet, equals, hashCode, putAll, toStringcontainsKey, defaultReturnValue, defaultReturnValue, get, put, removefinalize, getClass, notify, notifyAll, wait, wait, waitdefaultReturnValue, defaultReturnValuecontainsKey, get, put, removecontainsKey, get, put, removepublic Long2IntArrayMap(long[] key,
int[] value)
It is responsibility of the caller that the elements of key are distinct.
key - the key array.value - the value array (it must have the same length as key).public Long2IntArrayMap()
public Long2IntArrayMap(int capacity)
capacity - the initial capacity.public Long2IntArrayMap(Long2IntMap m)
m - a map.public Long2IntArrayMap(Map<? extends Long,? extends Integer> m)
m - a map.public Long2IntArrayMap(long[] key,
int[] value,
int size)
It is responsibility of the caller that the first size elements of key are distinct.
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.public Long2IntMap.FastEntrySet long2IntEntrySet()
Long2IntMapThis method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen Long2IntMap.entrySet()
so that it returns an ObjectSet
of objects of type Map.Entry (the latter makes it possible to
access keys and values with type-specific methods).
long2IntEntrySet in interface Long2IntMapLong2IntMap.entrySet()public int get(long k)
Long2IntFunctionget in interface Long2IntFunctionk - the key.Function.get(Object)public int size()
FunctionMost function implementations will have some knowledge of the intended number of keys in their domain. In some cases, however, this might not be possible.
public void clear()
Functionpublic boolean containsKey(long k)
AbstractLong2IntMapAbstractLong2IntMap.keySet().containsKey in interface Long2IntFunctioncontainsKey in class AbstractLong2IntMapFunction.containsKey(Object)public boolean containsValue(int v)
AbstractLong2IntMapAbstractLong2IntMap.values().containsValue in interface Long2IntMapcontainsValue in class AbstractLong2IntMapMap.containsValue(Object)public boolean isEmpty()
public int put(long k,
int v)
Long2IntFunctionput in interface Long2IntFunctionput in class AbstractLong2IntFunctionk - the key.v - the value.Function.put(Object,Object)public int remove(long k)
Long2IntFunctionremove in interface Long2IntFunctionremove in class AbstractLong2IntFunctionFunction.remove(Object)public LongSet keySet()
AbstractLong2IntMapThe view is backed by the set returned by AbstractLong2IntMap.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.
keySet in interface Long2IntMapkeySet in interface Map<Long,Integer>keySet in class AbstractLong2IntMapMap.keySet()public IntCollection values()
AbstractLong2IntMapThe view is backed by the set returned by AbstractLong2IntMap.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.
values in interface Long2IntMapvalues in interface Map<Long,Integer>values in class AbstractLong2IntMapMap.values()public Long2IntArrayMap clone()
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.
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