org.unix4j.util.sort

Class ScientificNumberStringComparator

java.lang.Object

org.unix4j.util.sort.ScientificNumberStringComparator

All Implemented Interfaces:

java.util.Comparator<java.lang.CharSequence>

public class ScientificNumberStringComparator
extends java.lang.Object
implements java.util.Comparator<java.lang.CharSequence>

Comparison based on Double floating point numbers. This allows floating point numbers to be specified in scientific notation, like 1.0e-34 and 10e100 using Double.parseDouble(String). Leading and trailing strings are ignored. If the string is not a valid number, it is treated as Double.NaN during the comparison.

Field Summary

Fields

Modifier and Type	Field and Description
static ScientificNumberStringComparator	INSTANCE The singleton instance.

Method Summary

Modifier and Type	Method and Description
int	compare(java.lang.CharSequence s1, java.lang.CharSequence s2)

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

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Field Detail

INSTANCE

public static final ScientificNumberStringComparator INSTANCE

The singleton instance.

Method Detail

compare

public int compare(java.lang.CharSequence s1,
                   java.lang.CharSequence s2)

Specified by:

compare in interface java.util.Comparator<java.lang.CharSequence>