public class Int2LongArrayMap extends AbstractInt2LongMap 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.
AbstractInt2LongMap.BasicEntryInt2LongMap.Entry, Int2LongMap.FastEntrySetdefRetValue| Constructor and Description |
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Int2LongArrayMap()
Creates a new empty array map.
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Int2LongArrayMap(int capacity)
Creates a new empty array map of given capacity.
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Int2LongArrayMap(int[] key,
long[] value)
Creates a new empty array map with given key and value backing arrays.
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Int2LongArrayMap(int[] key,
long[] 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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Int2LongArrayMap(Int2LongMap m)
Creates a new empty array map copying the entries of a given map.
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Int2LongArrayMap(Map<? extends Integer,? extends Long> 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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Int2LongArrayMap |
clone()
Returns a deep copy of this map.
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boolean |
containsKey(int k)
Checks whether the given value is contained in
AbstractInt2LongMap.keySet(). |
boolean |
containsValue(long v)
Checks whether the given value is contained in
AbstractInt2LongMap.values(). |
long |
get(int k)
Returns the value to which the given key is mapped.
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Int2LongMap.FastEntrySet |
int2LongEntrySet()
Returns a type-specific set view of the mappings contained in this map.
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boolean |
isEmpty() |
IntSet |
keySet()
Returns a type-specific-set view of the keys of this map.
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long |
put(int k,
long v)
Adds a pair to the map.
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long |
remove(int 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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LongCollection |
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 Int2LongArrayMap(int[] key,
long[] 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 Int2LongArrayMap()
public Int2LongArrayMap(int capacity)
capacity - the initial capacity.public Int2LongArrayMap(Int2LongMap m)
m - a map.public Int2LongArrayMap(Map<? extends Integer,? extends Long> m)
m - a map.public Int2LongArrayMap(int[] key,
long[] 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 Int2LongMap.FastEntrySet int2LongEntrySet()
Int2LongMapThis method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen Int2LongMap.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).
int2LongEntrySet in interface Int2LongMapInt2LongMap.entrySet()public long get(int k)
Int2LongFunctionget in interface Int2LongFunctionk - 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(int k)
AbstractInt2LongMapAbstractInt2LongMap.keySet().containsKey in interface Int2LongFunctioncontainsKey in class AbstractInt2LongMapFunction.containsKey(Object)public boolean containsValue(long v)
AbstractInt2LongMapAbstractInt2LongMap.values().containsValue in interface Int2LongMapcontainsValue in class AbstractInt2LongMapMap.containsValue(Object)public boolean isEmpty()
public long put(int k,
long v)
Int2LongFunctionput in interface Int2LongFunctionput in class AbstractInt2LongFunctionk - the key.v - the value.Function.put(Object,Object)public long remove(int k)
Int2LongFunctionremove in interface Int2LongFunctionremove in class AbstractInt2LongFunctionFunction.remove(Object)public IntSet keySet()
AbstractInt2LongMapThe view is backed by the set returned by AbstractInt2LongMap.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 Int2LongMapkeySet in interface Map<Integer,Long>keySet in class AbstractInt2LongMapMap.keySet()public LongCollection values()
AbstractInt2LongMapThe view is backed by the set returned by AbstractInt2LongMap.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 Int2LongMapvalues in interface Map<Integer,Long>values in class AbstractInt2LongMapMap.values()public Int2LongArrayMap 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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