Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 2011 OpenConcerto, by ILM Informatique. All rights reserved.
 * 
 * The contents of this file are subject to the terms of the GNU General Public License Version 3
 * only ("GPL"). You may not use this file except in compliance with the License. You can obtain a
 * copy of the License at http://www.gnu.org/licenses/gpl-3.0.html See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each file.
 */

import java.util.List;

public class Main {
    /**
     * Return an index between <code>0</code> and <code>l.size()</code> inclusive. If <code>i</code>
     * is negative, it is added to <code>l.size()</code> (but bounded to 0), ie for a list of 3
     * items, -1 is the index of the last item ; -3 and -4 are both the first. If <code>i</code> is
     * greater than <code>l.size()</code> then <code>l.size()</code> is returned.
     * 
     * <pre>
     *    a  b  c  a  b  c
     *   -3 -2 -1  0  1  2  3
     * </pre>
     * 
     * @param l the list, eg a list of 3 items.
     * @param i the virtual index, eg -1.
     * @return the real index, eg 2.
     */
    static public int getValidIndex(final List<?> l, final int i) {
        return getValidIndex(l, i, false);
    }

    static public int getValidIndex(final List<?> l, final int i, final boolean strict) {
        final int size = l.size();
        if (i > size) {
            if (strict)
                throw new IndexOutOfBoundsException("Too high : " + i + " > " + size);
            return size;
        } else if (i < -size) {
            if (strict)
                throw new IndexOutOfBoundsException("Too low : " + i + " < " + -size);
            return 0;
        } else if (i >= 0) {
            return i;
        } else {
            return size + i;
        }
    }
}