Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*******************************************************************************
 * Manchester Centre for Integrative Systems Biology
 * University of Manchester
 * Manchester M1 7ND
 * United Kingdom
 * 
 * Copyright (C) 2007 University of Manchester
 * 
 * This program is released under the Academic Free License ("AFL") v3.0.
 * (http://www.opensource.org/licenses/academic.php)
 *******************************************************************************/

import java.util.*;

public class Main {
    /**
     * 
     */
    public static final String ELEMENT_SEPARATOR = ",(\\s)*";
    /**
     * 
     */
    private static final String EMPTY_STRING = "";
    /**
     * 
     */
    private static final String ARRAY_SEPARATOR = ";";
    /**
     * 
     */
    private static final String ARRAY_OPEN_TAG = "[";
    /**
     * 
     */
    private static final String ARRAY_CLOSE_TAG = "]";

    /**
     * 
     * @param value
     * @return double[][]
     */
    public static double[][] to2dDoubleArray(final String value) {
        final String strippedValue = value.replace(ARRAY_OPEN_TAG, EMPTY_STRING).replace(ARRAY_CLOSE_TAG,
                EMPTY_STRING);
        final StringTokenizer tokenizer = new StringTokenizer(strippedValue, ARRAY_SEPARATOR);
        final double[][] array = new double[tokenizer.countTokens()][];
        int i = 0;

        while (tokenizer.hasMoreTokens()) {
            array[i++] = toDoubleArray(tokenizer.nextToken());
        }

        return array;
    }

    /**
     * 
     * @param collection
     * @return double[][]
     */
    public static double[][] to2dDoubleArray(final List<double[]> collection) {
        final double[][] array = new double[collection.size()][];
        int i = 0;

        for (Iterator<double[]> iterator = collection.iterator(); iterator.hasNext();) {
            array[i++] = iterator.next();
        }

        return array;
    }

    /**
     * 
     * @param value
     * @return double[]
     */
    public static double[] toDoubleArray(final String value) {
        if (value == null) {
            return new double[] {};
        }

        final int BRACKET_LENGTH = 1;
        final String strippedValue = value.substring(BRACKET_LENGTH, value.length() - BRACKET_LENGTH);
        final StringTokenizer tokenizer = new StringTokenizer(strippedValue, ELEMENT_SEPARATOR);
        final Collection<Double> doubleCollection = new ArrayList<>();

        while (tokenizer.hasMoreTokens()) {
            doubleCollection.add(Double.valueOf(tokenizer.nextToken().trim()));
        }

        return toDoubleArray(doubleCollection);
    }

    /**
     * 
     * @param stringArray
     * @return double[]
     */
    public static double[] toDoubleArray(final String[] stringArray) {
        final Collection<Double> doubleCollection = new ArrayList<>();

        for (String value : stringArray) {
            doubleCollection.add(Double.valueOf(value));
        }

        return toDoubleArray(doubleCollection);
    }

    /**
     * 
     * @param doubleArray
     * @return double[]
     */
    public static double[] toDoubleArray(final Double[] doubleArray) {
        return toDoubleArray(Arrays.asList(doubleArray));
    }

    /**
     * 
     * @param collection
     * @return double[]
     */
    public static double[] toDoubleArray(final Collection<Double> collection) {
        final double[] array = new double[collection == null ? 0 : collection.size()];

        if (collection != null) {
            int i = 0;

            for (Iterator<Double> iterator = collection.iterator(); iterator.hasNext();) {
                array[i++] = iterator.next().doubleValue();
            }
        }

        return array;
    }
}