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- /*
- * @(#)BidirectionalBubbleSortAlgorithm.java 1.6 95/01/31 James Gosling
- *
- * Copyright (c) 1994 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Permission to use, copy, modify, and distribute this software
- * and its documentation for NON-COMMERCIAL purposes and without
- * fee is hereby granted provided that this copyright notice
- * appears in all copies. Please refer to the file "copyright.html"
- * for further important copyright and licensing information.
- *
- * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
- * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
- * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
- */
-
- /**
- * A bi-directional bubble sort demonstration algorithm
- * SortAlgorithm.java, Thu Oct 27 10:32:35 1994
- *
- * @author James Gosling
- * @version 1.6, 31 Jan 1995
- */
- class BidirectionalBubbleSortAlgorithm extends SortAlgorithm {
- void sort(int a[]) {
- int j;
- int limit = a.length;
- int st = -1;
- while (st < limit) {
- boolean flipped = false;
- st++;
- limit--;
- for (j = st; j < limit; j++) {
- if (stopRequested) {
- return;
- }
- if (a[j] > a[j + 1]) {
- int T = a[j];
- a[j] = a[j + 1];
- a[j + 1] = T;
- flipped = true;
- pause(st, limit);
- }
- }
- if (!flipped) {
- return;
- }
- for (j = limit; --j >= st;) {
- if (stopRequested) {
- return;
- }
- if (a[j] > a[j + 1]) {
- int T = a[j];
- a[j] = a[j + 1];
- a[j + 1] = T;
- flipped = true;
- pause(st, limit);
- }
- }
- if (!flipped) {
- return;
- }
- }
- pause(st, limit);
- }
- }
-