This class defines static methods for
sorting, searching, and performing other useful operations on arrays.
It also defines the
asList( ) method, which
List wrapper around a specified array of
objects. Any changes made to the
List are also
made to the underlying array. This is a powerful method that allows
any array of objects to be manipulated in any of the ways a
List can be manipulated. It provides a link
between arrays and the Java collections framework.
methods sort an array (or a specified portion of an array) in place.
Variants of the method are defined for arrays of each primitive type
and for arrays of
Object. For arrays of primitive
types, the sorting is done according to the natural ordering of the
type. For arrays of objects, the sorting is done according to the
Comparator, or, if the array contains
java.lang.Comparable objects, according to
the ordering defined by that interface. When sorting an array of
objects, a stable sorting algorithm is used so that the relative
ordering of equal objects is not disturbed. (This allows repeated
sorts to order objects by key and subkey, for example.)
methods perform an efficient search (in logarithmic time) of a sorted
array for a specified value. If a match is found in the array,
binarySearch( ) returns the index of the match. If
no match is found, the method returns a negative number. For a
negative return value
r, the index
-(r+1) specifies ...