Java List Random Item PickRandom(final Collection list)

Description

Returns a random object from the list supplied.

License

Open Source License

Declaration

public static Object PickRandom(final Collection list) 

Method Source Code

//package com.java2s;
/*// w w  w. ja v  a 2  s.  c om
 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

import java.util.Collection;

import java.util.Random;

public class Main {
    /**
     * Returns a random object from the list supplied.
     */
    public static Object PickRandom(final Collection list) {
        return PickRandom(list.toArray());
    }

    /**
     * Returns a random object from the array supplied.
     */
    public static Object PickRandom(final Object[] array) {
        return array[new Random().nextInt(array.length)];
    }

    public static Object[] ToArray(final Object... toSmashIntoArray) {
        return toSmashIntoArray;
    }
}

Related

1. newRandomV1(int size, int price, List oldRandomList)
2. nextElement(List list)
3. nextRandomElement(final List list)
4. pickNAtRandom(List vals, int n, long seed)
5. pickOneAtRandom(List list)
6. pickRandom(LinkedList list, int n)
7. pickRandom(List collection)
8. pickupFromList(String[] list)
9. resampleWithReplacement(final List l, final int n)