/**
* Copyright 2010 Neuroph Project http://neuroph.sourceforge.net
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.neuroph.util;
import java.util.List;
import java.util.StringTokenizer;
import java.util.Vector;
/**
* Provides methods to parse strings as Integer or Double vectors.
*
* @author Zoran Sevarac <sevarac@gmail.com>
*/
public class VectorParser {
/**
* This method parses input String and returns Integer vector
*
* @param str
* input String
* @return Integer vector
*/
static public Vector<Integer> parseInteger(String str) {
StringTokenizer tok = new StringTokenizer(str);
Vector<Integer> ret = new Vector<Integer>();
while (tok.hasMoreTokens()) {
Integer d = new Integer(tok.nextToken());
ret.add(d);
}
return ret;
}
/**
* This method parses input String and returns Double vector
*
* @param inputStr
* input String
* @return double array
*/
static public double[] parseDoubleArray(String inputStr) {
String[] inputsArrStr = inputStr.split(" ");
double[] ret = new double[inputsArrStr.length];
for (int i = 0; i < inputsArrStr.length; i++) {
ret[i] = Double.parseDouble(inputsArrStr[i]);
}
return ret;
}
public static double[] toDoubleArray(List<Double> list) {
double[] ret = new double[list.size()];
for (int i = 0; i < list.size(); i++) {
ret[i] = list.get(i).doubleValue();
}
return ret;
}
public static Vector<Double> convertToVector(double[] array) {
Vector<Double> vector = new Vector<Double>(array.length);
for (double val : array) {
vector.add(val);
}
return vector;
}
public static double[] convertToArray(List<Double> list) {
double[] array = new double[list.size()];
int i = 0;
for (double d : list) {
array[i++] = d;
}
return array;
}
}