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37f88b4017
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@1176 6c8d7289-2bf4-0310-a012-ef5d649a1542
95 lines
3.4 KiB
Java
95 lines
3.4 KiB
Java
// disorderHeap.java
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// -----------------------
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// (C) by Michael Peter Christen; mc@anomic.de
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004
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// last major change: 17.05.2004
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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package de.anomic.tools;
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import java.util.LinkedList;
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public class disorderHeap {
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LinkedList list;
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public disorderHeap() {
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list = new LinkedList();
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}
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public disorderHeap(int numbers) {
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// create a disorder heap with numbers in it
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// the numbers are 0..numbers-1
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this();
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for (int i = 0; i < numbers; i++) add(Integer.toString(i));
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}
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public synchronized void add(Object element) {
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// add one element into the list at an arbitrary position
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int pos = (int) ((System.currentTimeMillis() / 7) % (list.size() + 1));
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list.add(pos, element);
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}
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public synchronized Object remove() {
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if (list.size() == 0) return null;
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int pos = (int) ((System.currentTimeMillis() / 13) % list.size());
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return list.remove(pos);
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}
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public synchronized int number() {
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String n = (String) this.remove();
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if (n == null) return -1;
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try {
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return Integer.parseInt(n);
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} catch (Exception e) {
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return -1;
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}
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}
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public synchronized int size() {
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return list.size();
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}
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public static void main(String[] args) {
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disorderHeap ul = new disorderHeap();
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for (int i = 0; i < args.length; i++) ul.add(args[i]);
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for (int i = 0; i < args.length; i++) System.out.print((String) ul.remove() + " ");
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System.out.println();
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}
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} |