Search with a Comparator : Comparator « Collections Data Structure « Java

1. Java
2. Collections Data Structure
3. Comparator

Search with a Comparator

    

// : c11:AlphabeticSearch.java
//Searching with a Comparator.
//From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
//www.BruceEckel.com. See copyright notice in CopyRight.txt.

import java.util.Arrays;
import java.util.Comparator;

public class AlphabeticSearch {

  public static void main(String[] args) {
    String[] sa = new String[] { "a", "c", "d" };
    AlphabeticComparator comp = new AlphabeticComparator();
    Arrays.sort(sa, comp);
    int index = Arrays.binarySearch(sa, sa[10], comp);
    System.out.println("Index = " + index);
  }
} ///:~

class AlphabeticComparator implements Comparator {
  public int compare(Object o1, Object o2) {
    String s1 = (String) o1;
    String s2 = (String) o2;
    return s1.toLowerCase().compareTo(s2.toLowerCase());
  }
} ///:~


           
         
    
    
    
  

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