Package adams.core

Class CompareUtils

java.lang.Object

adams.core.CompareUtils

public class CompareUtils
extends Object

Utility class for comparisons.

Author:

FracPete (fracpete at waikato dot ac dot nz)

Constructor Summary

Constructors

Constructor	Description
CompareUtils()

Method Summary

Modifier and Type	Method	Description
static int	compare(int[] a1, int[] a2)	Compares two integer arrays.
static int	compare(Comparable o1, Comparable o2)	Compares two comparable objects.
static int	compare(Map m1, Map m2)	Compares two maps.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CompareUtils

public CompareUtils()

Method Detail

compare

public static int compare(Comparable o1,
                          Comparable o2)

Compares two comparable objects. Takes care of null objects. Returns -1, 0 or +1, if o1 less than, equal to or greater than o2. Returns 0 if both objects null, -1 if o1 null but not o2 and +1 if o1 not null but o2.

Parameters:

o1 - the first object

o2 - the second object

Returns:

the comparison result

compare

public static int compare(int[] a1,
                          int[] a2)

Compares two integer arrays.

Parameters:

a1 - the first array

a2 - the second array

Returns:

-1, 0, +1 if a1 is smaller than, equal to, or larger than a2

compare

public static int compare(Map m1,
                          Map m2)

Compares two maps. Both, keys and values must be Comparable.

Parameters:

m1 - the first map

m2 - the second map

Returns:

the comparison result