01: // disorderSet.java
02: // -----------------------
03: // (C) by Michael Peter Christen; mc@anomic.de
04: // first published on http://www.anomic.de
05: // Frankfurt, Germany, 2004
06: // last major change: 17.05.2004
07: //
08: // This program is free software; you can redistribute it and/or modify
09: // it under the terms of the GNU General Public License as published by
10: // the Free Software Foundation; either version 2 of the License, or
11: // (at your option) any later version.
12: //
13: // This program is distributed in the hope that it will be useful,
14: // but WITHOUT ANY WARRANTY; without even the implied warranty of
15: // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: // GNU General Public License for more details.
17: //
18: // You should have received a copy of the GNU General Public License
19: // along with this program; if not, write to the Free Software
20: // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21: //
22: // Using this software in any meaning (reading, learning, copying, compiling,
23: // running) means that you agree that the Author(s) is (are) not responsible
24: // for cost, loss of data or any harm that may be caused directly or indirectly
25: // by usage of this softare or this documentation. The usage of this software
26: // is on your own risk. The installation and usage (starting/running) of this
27: // software may allow other people or application to access your computer and
28: // any attached devices and is highly dependent on the configuration of the
29: // software which must be done by the user of the software; the author(s) is
30: // (are) also not responsible for proper configuration and usage of the
31: // software, even if provoked by documentation provided together with
32: // the software.
33: //
34: // Any changes to this file according to the GPL as documented in the file
35: // gpl.txt aside this file in the shipment you received can be done to the
36: // lines that follows this copyright notice here, but changes must not be
37: // done inside the copyright notive above. A re-distribution must contain
38: // the intact and unchanged copyright notice.
39: // Contributions and changes to the program code must be marked as such.
40:
41: package de.anomic.tools;
42:
43: import java.util.HashSet;
44: import java.util.Iterator;
45: import java.util.Set;
46:
47: public class disorderSet extends HashSet<String> implements Set<String> {
48:
49: private static final long serialVersionUID = 1L;
50: disorderHeap dh;
51:
52: public disorderSet() {
53: super ();
54: dh = null;
55: }
56:
57: public boolean hasAny() {
58: return (this .size() > 0);
59: }
60:
61: public Object any() {
62: // return just any element
63: if ((dh == null) || (dh.size() == 0)) {
64: if (this .size() == 0)
65: return null;
66: // fill up the queue
67: dh = new disorderHeap();
68: Iterator<String> elements = this .iterator();
69: while (elements.hasNext())
70: dh.add(elements.next());
71: }
72: return dh.remove();
73: }
74:
75: public static void main(String[] args) {
76: disorderSet ds = new disorderSet();
77: for (int i = 0; i < args.length; i++)
78: ds.add(args[i]);
79: for (int i = 0; i < args.length * 3; i++)
80: System.out.print((String) ds.any() + " ");
81: System.out.println();
82: }
83:
84: }
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