// Fig. 24.10 : BinarySearchTest.java // Using algorithm binarySearch import java.util.*; public class BinarySearchTest { private String colors[] = { "red", "white", "blue", "black", "yellow", "purple", "tan", "pink" }; private ArrayList aList; // ArrayList reference public BinarySearchTest() { aList = new ArrayList( Arrays.asList( colors ) ); Collections.sort( aList ); // sort the ArrayList System.out.println( "Sorted ArrayList: " + aList ); } public void printSearchResults() { printSearchResultsHelper( colors[ 3 ] ); // first item printSearchResultsHelper( colors[ 0 ] ); // middle item printSearchResultsHelper( colors[ 7 ] ); // last item printSearchResultsHelper( "aardvark" ); // below lowest printSearchResultsHelper( "goat" ); // doesnt exist printSearchResultsHelper( "zebra" ); // doesnt exist } private void printSearchResultsHelper( String key ) { int result = 0; System.out.println( "\nSearching for: " + key ); result = Collections.binarySearch( aList, key ); System.out.println( ( result >= 0 ? "Found at index " + result : "Not Found (" + result + ")" ) ); } public static void main( String args[] ) { new BinarySearchTest().printSearchResults(); } } /************************************************************************** * (C) Copyright 1999 by Deitel & Associates, Inc. and Prentice Hall. * * All Rights Reserved. * * * * DISCLAIMER: The authors and publisher of this book have used their * * best efforts in preparing the book. These efforts include the * * development, research, and testing of the theories and programs * * to determine their effectiveness. The authors and publisher make * * no warranty of any kind, expressed or implied, with regard to these * * programs or to the documentation contained in these books. The authors * * and publisher shall not be liable in any event for incidental or * * consequential damages in connection with, or arising out of, the * * furnishing, performance, or use of these programs. * *************************************************************************/