Package org.moeaframework.util

Class NumericStringComparator

java.lang.Object

org.moeaframework.util.NumericStringComparator

All Implemented Interfaces:

Comparator<String>

public class NumericStringComparator
extends Object
implements Comparator<String>

Sorts strings containing numeric values.

The string is split into sections that contain numeric and non-numeric characters, with each section sorted independently. Numeric sections are sorted by their natural order (e.g., 1, 2, 3), whereas non-numeric are sorted lexicographically. The following table demonstrates the difference:

   Regular Sort           Numeric Sort
   ------------           ------------
   Value1                 Value1
   Value10                Value2
   Value11                Value10
   Value2                 Value11
   Value20                Value20
   Value21                Value21
 

Constructor Summary

Constructors

Constructor	Description
NumericStringComparator()	Creates a new numeric string comparator.

Method Summary

Modifier and Type	Method	Description
int	compare(String str1, String str2)

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, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Details

NumericStringComparator

public NumericStringComparator()

Creates a new numeric string comparator.

Method Details

compare

public int compare(String str1,
 String str2)

Specified by:

compare in interface Comparator<String>