001    /*
002     * Copyright (C) 2008-2010 by Holger Arndt
003     *
004     * This file is part of the Universal Java Matrix Package (UJMP).
005     * See the NOTICE file distributed with this work for additional
006     * information regarding copyright ownership and licensing.
007     *
008     * UJMP is free software; you can redistribute it and/or modify
009     * it under the terms of the GNU Lesser General Public License as
010     * published by the Free Software Foundation; either version 2
011     * of the License, or (at your option) any later version.
012     *
013     * UJMP is distributed in the hope that it will be useful,
014     * but WITHOUT ANY WARRANTY; without even the implied warranty of
015     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
016     * GNU Lesser General Public License for more details.
017     *
018     * You should have received a copy of the GNU Lesser General Public
019     * License along with UJMP; if not, write to the
020     * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
021     * Boston, MA  02110-1301  USA
022     */
023    
024    package org.ujmp.core.objectmatrix.calculation;
025    
026    import org.ujmp.core.Matrix;
027    
028    public class Squeeze extends Reshape {
029            private static final long serialVersionUID = 6364079287530956244L;
030    
031            public Squeeze(Matrix source) {
032                    super(source, calculateNewSize(source));
033            }
034    
035            private static long[] calculateNewSize(Matrix source) {
036                    long[] oldSize = source.getSize();
037                    int n = 0;
038                    for (int d = oldSize.length; --d != -1;) {
039                            if (oldSize[d] > 1) {
040                                    n++;
041                            }
042                    }
043                    long[] newSize = new long[n];
044                    for (int d = oldSize.length; --d != -1;) {
045                            if (oldSize[d] > 1) {
046                                    n--;
047                                    newSize[n] = oldSize[d];
048                            }
049                    }
050                    return newSize;
051            }
052    
053    }