/*

 * Copyright 2003 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/*

 * @test

 * @bug     4193200

 * @summary Basic test for Collections.frequency

 * @author  Josh Bloch

 *

 * @compile -source 1.5 Frequency.java

 * @run main Frequency

 */

import java.util.*;

public class Frequency {

    final static int N = 100;

    public static void main(String args[]) {

        test(new ArrayList<Integer>());

        test(new LinkedList<Integer>());

    }

    static void test(List<Integer> list) {

        for (int i = 0; i < N; i++)

            for (int j = 0; j < i; j++)

                list.add(i);

        Collections.shuffle(list);

        for (int i = 0; i < N; i++)

            if (Collections.frequency(list, i) != i)

                throw new RuntimeException(list.getClass() + ": " + i);

    }

}