1 package junit.runner; 2 3 import java.util.*; 4 5 import junit.runner.*; 6 7 /** 8 * A custom quick sort with support to customize the swap behaviour. 9 * NOTICE: We can't use the the sorting support from the JDK 1.2 collection 10 * classes because of the JDK 1.1.7 compatibility. 11 * {@hide} - Not needed for 1.0 SDK 12 */ 13 public class Sorter { 14 public static interface Swapper { 15 public void swap(Vector values, int left, int right); 16 } 17 18 public static void sortStrings(Vector values , int left, int right, Swapper swapper) { 19 int oleft= left; 20 int oright= right; 21 String mid= (String)values.elementAt((left + right) / 2); 22 do { 23 while (((String)(values.elementAt(left))).compareTo(mid) < 0) 24 left++; 25 while (mid.compareTo((String)(values.elementAt(right))) < 0) 26 right--; 27 if (left <= right) { 28 swapper.swap(values, left, right); 29 left++; 30 right--; 31 } 32 } while (left <= right); 33 34 if (oleft < right) 35 sortStrings(values, oleft, right, swapper); 36 if (left < oright) 37 sortStrings(values, left, oright, swapper); 38 } 39 } 40
