Android Collection Sub Collection Get subset(Collection c, int size, java.util.Random rand)

Description

subset

License

Open Source License

Declaration

public static Collection subset(Collection c, int size,
            java.util.Random rand) 

Method Source Code

//package com.java2s;
/* Copyright (C) 2003 Univ. of Massachusetts Amherst, Computer Science Dept.
 This file is part of "MALLET" (MAchine Learning for LanguagE Toolkit).
 http://www.cs.umass.edu/~mccallum/mallet
 This software is provided under the terms of the Common Public License,
 version 1.0, as published by http://www.opensource.org.  For further
 information, see the file `LICENSE' included with this distribution. */

import java.util.*;

public class Main {
    public static Collection subset(Collection c, int size,
            java.util.Random rand) {
        ArrayList list = new ArrayList(c);
        int realSize = (size < c.size()) ? size : c.size();
        java.util.Collections.shuffle(list, rand);
        return list.subList(0, realSize);
    }//from w  ww  .j  av  a 2s . c o  m
}