Java List Random Item pickRandom(List collection)

Description

pick Random

License

Open Source License

Declaration

public static <T> T pickRandom(List<T> collection) 

Method Source Code

//package com.java2s;
/*//  w ww.j av a2  s.  com
 * BitThief - A Free Riding BitTorrent Client
 * Copyright (C) 2006 Patrick Moor <patrick@moor.ws>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 */

import java.util.List;
import java.util.Random;

public class Main {
    private static final Random rnd = new Random();

    public static <T> T pickRandom(List<T> collection) {
        int index = rnd.nextInt(collection.size());
        return collection.get(index);
    }
}

Related

1. nextRandomElement(final List list)
2. pickNAtRandom(List vals, int n, long seed)
3. pickOneAtRandom(List list)
4. PickRandom(final Collection list)
5. pickRandom(LinkedList list, int n)
6. pickupFromList(String[] list)
7. resampleWithReplacement(final List l, final int n)
8. sample(List l, Random r)
9. sample(Random random, List list)