org.neo4j.helpers.collection.ReverseArrayIterator Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of neo4j-kernel Show documentation

Neo4j kernel is a lightweight, embedded Java database designed to store data structured as graphs rather than tables. For more information, see http://neo4j.org.

There is a newer version: 5.26.0

Show newest version

/**
 * Copyright (c) 2002-2013 "Neo Technology,"
 * Network Engine for Objects in Lund AB [http://neotechnology.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */
package org.neo4j.helpers.collection;

import java.util.Iterator;
import java.util.NoSuchElementException;

public class ReverseArrayIterator implements Iterator
{
    private final T[] array;
    private int index;

    public ReverseArrayIterator( T[] array )
    {
        this.array = array;
        this.index = array.length-1;
    }

    public boolean hasNext()
    {
        return index >= 0;
    }

    public T next()
    {
        if ( !hasNext() ) throw new NoSuchElementException();
        return array[index--];
    }

    public void remove()
    {
        throw new UnsupportedOperationException();
    }
}