Is there a data structure in Java (java util, guava...) that allows me to store "key value" pairs that can also be interpreted as value-key?
Example:
Datastructure d = new Datastructure();
d.add(1, "foo");
d.add(21 "bar");
d.add(33 "hello");
d.add(55 "world");
A function like d.get1(1)
should return foo
.
A function like d.get2("foo")
should return 1
.
A function like d.get1(33)
should return hello
.
A function like d.get2("hello")
should return 33
.
...
Is there something that works like this?