com.ibm.bluej.util.common

Class SecondPairComparator<T1,T2>

java.lang.Object

com.ibm.bluej.util.common.SecondPairComparator<T1,T2>

All Implemented Interfaces:

java.io.Serializable, java.util.Comparator<Pair<T1,T2>>

public class SecondPairComparator<T1,T2>
extends java.lang.Object
implements java.util.Comparator<Pair<T1,T2>>, java.io.Serializable

orders Pairs based on their first element

Author:

partha

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	REVERSE

Constructor Summary

Constructors

Constructor and Description
SecondPairComparator() default constructor that assumes the second element is Comparable
SecondPairComparator(boolean reverse)
SecondPairComparator(java.util.Comparator comparator) constructor that takes a Comparator where null means treat the elements as Comparable

Method Summary

Methods

Modifier and Type	Method and Description
int	compare(Pair p1, Pair p2)
void	setReverseOrdering() reverses the order
static <S extends Pair,T extends java.util.List<S>> void	sort(T list)
static <S extends Pair,T extends java.util.List<S>> void	sortR(T list)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

equals

Field Detail

REVERSE

public static boolean REVERSE

Constructor Detail

SecondPairComparator

public SecondPairComparator()

default constructor that assumes the second element is Comparable

SecondPairComparator

public SecondPairComparator(boolean reverse)

SecondPairComparator

public SecondPairComparator(java.util.Comparator comparator)

constructor that takes a Comparator where null means treat the elements as Comparable

Parameters:

comp -

Method Detail

sortR

public static <S extends Pair,T extends java.util.List<S>> void sortR(T list)

sort

public static <S extends Pair,T extends java.util.List<S>> void sort(T list)

setReverseOrdering

public void setReverseOrdering()

reverses the order

compare

public int compare(Pair p1,
          Pair p2)

Specified by:

compare in interface java.util.Comparator<Pair<T1,T2>>