diff options
Diffstat (limited to 'bundles/org.eclipse.wst.sse.core/src/org/eclipse/wst/sse/core/internal/util/Sorter.java')
-rw-r--r-- | bundles/org.eclipse.wst.sse.core/src/org/eclipse/wst/sse/core/internal/util/Sorter.java | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/bundles/org.eclipse.wst.sse.core/src/org/eclipse/wst/sse/core/internal/util/Sorter.java b/bundles/org.eclipse.wst.sse.core/src/org/eclipse/wst/sse/core/internal/util/Sorter.java deleted file mode 100644 index e3ff42b1c1..0000000000 --- a/bundles/org.eclipse.wst.sse.core/src/org/eclipse/wst/sse/core/internal/util/Sorter.java +++ /dev/null @@ -1,77 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2001, 2005 IBM Corporation and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Eclipse Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/epl-v10.html - * - * Contributors: - * IBM Corporation - initial API and implementation - * Jens Lukowski/Innoopract - initial renaming/restructuring - * - *******************************************************************************/ -package org.eclipse.wst.sse.core.internal.util; - - - -/** - * The SortOperation takes a collection of objects and returns a sorted - * collection of these objects. Concrete instances of this class provide the - * criteria for the sorting of the objects based on the type of the objects. - */ -public abstract class Sorter { - - /** - * Returns true if elementTwo is 'greater than' elementOne This is the - * 'ordering' method of the sort operation. Each subclass overides this - * method with the particular implementation of the 'greater than' concept - * for the objects being sorted. - */ - public abstract boolean compare(Object elementOne, Object elementTwo); - - /** - * Sort the objects in sorted collection and return that collection. - */ - private Object[] quickSort(Object[] sortedCollection, int left, int right) { - int originalLeft = left; - int originalRight = right; - Object mid = sortedCollection[(left + right) / 2]; - - do { - while (compare(sortedCollection[left], mid)) - left++; - while (compare(mid, sortedCollection[right])) - right--; - if (left <= right) { - Object tmp = sortedCollection[left]; - sortedCollection[left] = sortedCollection[right]; - sortedCollection[right] = tmp; - left++; - right--; - } - } while (left <= right); - - if (originalLeft < right) - sortedCollection = quickSort(sortedCollection, originalLeft, right); - if (left < originalRight) - sortedCollection = quickSort(sortedCollection, left, originalRight); - - return sortedCollection; - } - - /** - * Return a new sorted collection from this unsorted collection. Sort - * using quick sort. - */ - public Object[] sort(Object[] unSortedCollection) { - int size = unSortedCollection.length; - Object[] sortedCollection = new Object[size]; - - //copy the array so can return a new sorted collection - System.arraycopy(unSortedCollection, 0, sortedCollection, 0, size); - if (size > 1) - quickSort(sortedCollection, 0, size - 1); - - return sortedCollection; - } -} |