Searches the array backwards for the specified object, starting from the specified index,
and returns an index to it.
The object equality is tested using the Java java.lang.Object.equals()
method.
Returns -1 if the object is not found.
Parameters:
a
obj
If this parameter is null
, the function
will seek the occurence of null
element.
fromIndex
indexOf()
You may call this function in a method-like style:
a.lastIndexOf(obj,fromIndex)