edu.stanford.math.plex4.homology.chain_basis

Class SimplexComparator

java.lang.Object

edu.stanford.math.plex4.homology.chain_basis.SimplexComparator

All Implemented Interfaces:

java.util.Comparator<Simplex>

public class SimplexComparator
extends java.lang.Object
implements java.util.Comparator<Simplex>

This class defines the standard ordering on the Simplex class and implements the Comparator interface. The ordering of the simplices is done first by dimension. If two simplices have the same dimension, their vertices are then compared in lexicographical order. This class implements the singleton design pattern. Thus it cannot be instantiated. Instead the user must call the static getInstance() function in order to get the actual instance for use. Examples: [4, 5, 7] > [9, 10]; [1, 2, 3] > [1, 2, 2]; [1, 2, 3] < [1, 3, 2];

Author:

Andrew Tausz

Method Summary

Methods

Modifier and Type	Method and Description
int	compare(Simplex o1, Simplex o2)
static SimplexComparator	getInstance() This static function returns the one instance of the class.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

equals

Method Detail

getInstance

public static SimplexComparator getInstance()

This static function returns the one instance of the class.

Returns:

the instance of the class

compare

public int compare(Simplex o1,
          Simplex o2)

Specified by:

compare in interface java.util.Comparator<Simplex>