Here you can find the source of hashset_to_int_array(Set
public static int[] hashset_to_int_array(Set<Integer> hs)
//package com.java2s; /****************************************************************************\ * * * SNEE (Sensor NEtwork Engine) * * http://code.google.com/p/snee * * Release 1.0, 24 May 2009, under New BSD License. * * * * Copyright (c) 2009, University of Manchester * * All rights reserved. * * * * Redistribution and use in source and binary forms, with or without * * modification, are permitted provided that the following conditions are * * met: Redistributions of source code must retain the above copyright * * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, * * this list of conditions and the following disclaimer in the documentation * * and/or other materials provided with the distribution. * * Neither the name of the University of Manchester nor the names of its * * contributors may be used to endorse or promote products derived from this * * software without specific prior written permission. * * * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * \****************************************************************************/ import java.util.Iterator; import java.util.Set; public class Main { public static int[] hashset_to_int_array(Set<Integer> hs) { int array[] = new int[hs.size()]; Iterator<Integer> itr = hs.iterator(); int i = 0; while (itr.hasNext()) { array[i++] = Integer.parseInt(itr.next().toString()); }//from w ww .j a v a 2 s . c o m return array; } }