source: branches/ralph/src/main/java/de/ugoe/cs/autoquest/tasktrees/alignment/pal/misc/Utils.java @ 1573

// Utils.java
//
// (c) 1999-2001 PAL Development Core Team
//
// This package may be distributed under the
// terms of the Lesser GNU General Public License (LGPL)

package de.ugoe.cs.autoquest.tasktrees.alignment.pal.misc;



/**
 * Provides some miscellaneous methods.
 *
 * @version $Id: Utils.java,v 1.9 2001/11/20 19:58:45 alexi Exp $
 *
 * @author Matthew Goode
 */
public class Utils {

        /** Clones an array of doubles
                * @return null if input is null, otherwise return complete copy.
                */
        public static final double[] getCopy(double[] array) {

                if(array == null) {
                        return null;
                }
                double[] copy = new double[array.length];
                System.arraycopy(array,0,copy,0,array.length);
                return copy;
        }
        
        /** 
         * Clones an array of doubles
         * @return null if input is null, otherwise return complete copy.
         */
        public static final double[][] getCopy(double[][] array) {

                if(array == null) {
                        return null;
                }
                double[][] copy = new double[array.length][];
                for(int i = 0 ; i < copy.length ; i++) {
                        copy[i] = new double[array[i].length];
                        System.arraycopy(array[i],0,copy[i],0,array[i].length);
                }
                return copy;
        }

        /** 
         * Clones an array of ints
         * @return null if input is null, otherwise return complete copy.
         */
        public static final int[] getCopy(int[] array) {
                if(array == null) {
                        return null;
                }
                int[] copy = new int[array.length];
                System.arraycopy(array,0,copy,0,array.length);
                return copy;
        }

        /** Copies all of source into dest - assumes dest to be large enough */
        public static final void copy(double[][] source, double[][] dest) {
                for(int i = 0 ; i < source.length ; i++) {
                        System.arraycopy(source[i],0,dest[i],0,source[i].length);
                }
        }

        /** 
         * A simple toString method for an array of doubles.
         * No fancy formating.
         * Puts spaces between each value
         */
        public static final String toString(double[] array) {
                StringBuffer sb = new StringBuffer(array.length*7);
                for(int i = 0 ; i < array.length ; i++) {
                        sb.append(array[i]);
                        sb.append(' ');
                }
                return sb.toString();
        }
        /** 
         * A simple toString method for an array of ints.
         * No fancy formating.
         * Puts spaces between each value
         */
        public static final String toString(int[] array) {
                StringBuffer sb = new StringBuffer(array.length*7);
                for(int i = 0 ; i < array.length ; i++) {
                        sb.append(array[i]);
                        sb.append(' ');
                }
                return sb.toString();
        }
                
        /** 
         * A simple toString method for an array of doubles.
         * No fancy formating.
         * Puts spaces between each value
         */
        public static final String toString(double[][] array) {
                String ss = "";
                for(int i = 0 ; i < array.length ; i++) {
                        ss+= i+":"+toString(array[i])+'\n';
                }
                return ss;
        }
}