150 lines
3.5 KiB
Java
150 lines
3.5 KiB
Java
//******************************************************************************
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//
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// File: ArraySeries.java
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// Package: edu.rit.numeric
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// Unit: Class edu.rit.numeric.ArraySeries
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//
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// This Java source file is copyright (C) 2013 by Alan Kaminsky. All rights
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// reserved. For further information, contact the author, Alan Kaminsky, at
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// ark@cs.rit.edu.
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//
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// This Java source file is part of the Parallel Java 2 Library ("PJ2"). PJ2 is
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// free software; you can redistribute it and/or modify it under the terms of
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// the GNU General Public License as published by the Free Software Foundation;
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// either version 3 of the License, or (at your option) any later version.
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//
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// PJ2 is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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// A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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//
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// A copy of the GNU General Public License is provided in the file gpl.txt. You
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// may also obtain a copy of the GNU General Public License on the World Wide
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// Web at http://www.gnu.org/licenses/gpl.html.
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//
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//******************************************************************************
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package edu.rit.numeric;
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import java.io.Externalizable;
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import java.io.IOException;
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import java.io.ObjectInput;
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import java.io.ObjectOutput;
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/**
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* Class ArraySeries provides a {@linkplain Series} view of values stored in an
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* array. Changing the contents of the array will change the ArraySeries.
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*
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* @author Alan Kaminsky
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* @version 17-Jun-2008
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*/
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public class ArraySeries
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extends Series
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implements Externalizable
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{
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// Hidden data members.
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private static final long serialVersionUID = 5850541176666797722L;
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private double[] xarray;
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// Exported constructors.
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/**
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* Construct a new uninitialized array series. This constructor is for use
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* only by object deserialization.
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*/
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public ArraySeries()
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{
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}
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/**
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* Construct a new array series.
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*
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* @param xarray Array of X values.
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*
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* @exception NullPointerException
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* (unchecked exception) Thrown if <TT>xarray</TT> is null.
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*/
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public ArraySeries
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(double[] xarray)
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{
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if (xarray == null)
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{
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throw new NullPointerException
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("ArraySeries(): xarray is null");
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}
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this.xarray = xarray;
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}
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// Exported operations.
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/**
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* Returns the number of values in this series.
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*
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* @return Length.
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*/
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public int length()
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{
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return xarray.length;
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}
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/**
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* Returns the given X value in this series.
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*
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* @param i Index.
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*
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* @return The X value in this series at index <TT>i</TT>.
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*
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* @exception ArrayIndexOutOfBoundsException
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* (unchecked exception) Thrown if <TT>i</TT> is not in the range
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* <TT>0</TT> .. <TT>length()-1</TT>.
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*/
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public double x
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(int i)
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{
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return xarray[i];
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}
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/**
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* Write this series to the given object output stream.
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*
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* @param out Object output stream.
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*
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* @exception IOException
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* Thrown if an I/O error occurred.
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*/
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public void writeExternal
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(ObjectOutput out)
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throws IOException
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{
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int n = xarray.length;
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out.writeInt (n);
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for (int i = 0; i < n; ++ i)
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{
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out.writeDouble (xarray[i]);
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}
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}
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/**
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* Read this series from the given object input stream.
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*
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* @param in Object input stream.
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*
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* @exception IOException
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* Thrown if an I/O error occurred.
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*/
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public void readExternal
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(ObjectInput in)
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throws IOException
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{
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int n = in.readInt();
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xarray = new double [n];
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for (int i = 0; i < n; ++ i)
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{
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xarray[i] = in.readDouble();
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}
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}
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}
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