util/Collections/Swap.java

/*
 * Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @bug     4323074
 * @summary Basic test for newly public swap algorithm
 * @author  Josh Bloch
 */

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class Swap {
    static final int SIZE = 100;

    public static void main(String[] args) throws Exception {
        List l = new ArrayList(Collections.nCopies(100, Boolean.FALSE));
        l.set(0, Boolean.TRUE);
        for (int i=0; i < SIZE-1; i++)
            Collections.swap(l, i, i+1);

        List l2 = new ArrayList(Collections.nCopies(100, Boolean.FALSE));
        l2.set(SIZE-1, Boolean.TRUE);
        if (!l.equals(l2))
            throw new RuntimeException("Wrong result");
    }
}
Revision:	1.4
Committed:	Mon Jan 8 03:12:03 2018 UTC (6 years, 3 months ago) by jsr166
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.3:	+3 -1 lines
Log Message:	organize imports
#	Content
1	/*
2	* Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved.
3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4	*
5	* This code is free software; you can redistribute it and/or modify it
6	* under the terms of the GNU General Public License version 2 only, as
7	* published by the Free Software Foundation.
8	*
9	* This code is distributed in the hope that it will be useful, but WITHOUT
10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12	* version 2 for more details (a copy is included in the LICENSE file that
13	* accompanied this code).
14	*
15	* You should have received a copy of the GNU General Public License version
16	* 2 along with this work; if not, write to the Free Software Foundation,
17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18	*
19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20	* or visit www.oracle.com if you need additional information or have any
21	* questions.
22	*/
23
24	/*
25	* @test
26	* @bug 4323074
27	* @summary Basic test for newly public swap algorithm
28	* @author Josh Bloch
29	*/
30
31	import java.util.ArrayList;
32	import java.util.Collections;
33	import java.util.List;
34
35	public class Swap {
36	static final int SIZE = 100;
37
38	public static void main(String[] args) throws Exception {
39	List l = new ArrayList(Collections.nCopies(100, Boolean.FALSE));
40	l.set(0, Boolean.TRUE);
41	for (int i=0; i < SIZE-1; i++)
42	Collections.swap(l, i, i+1);
43
44	List l2 = new ArrayList(Collections.nCopies(100, Boolean.FALSE));
45	l2.set(SIZE-1, Boolean.TRUE);
46	if (!l.equals(l2))
47	throw new RuntimeException("Wrong result");
48	}
49	}