package net.sf.saxon.expr.sort;



/**
 * A Sortable is an object that can be sorted using the QuickSort method.
 *
 * @author Michael H. Kay
 *
 */

public interface Sortable {

    /**
    * Compare two objects within this Sortable, identified by their position.
    * @return <0 if obj[a]<obj[b], 0 if obj[a]=obj[b], >0 if obj[a]>obj[b]
    */

    public int compare(int a, int b);

    /**
    * Swap two objects within this Sortable, identified by their position.
    */

    public void swap(int a, int b);

}

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// you may not use this file except in compliance with the License. You may obtain a copy of the
// License at http://www.mozilla.org/MPL/
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// WITHOUT WARRANTY OF ANY KIND, either express or implied.
// See the License for the specific language governing rights and limitations under the License.
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// The Original Code is: all this file
//
// The Initial Developer of the Original Code is Saxonica Limited.
// Portions created by ___ are Copyright (C) ___. All rights reserved.
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