de.gsi.math

Class ArrayUtils

java.lang.Object

de.gsi.math.ArrayUtils

public final class ArrayUtils
extends Object

Utility class containing only static functions used to manipulate arrays.

Author:

rstein, braeun

Method Summary

Modifier and Type	Method and Description
static double[]	convertToDouble(boolean[] array)
static double[]	convertToDouble(boolean[] array, double scale)
static double[]	convertToDouble(byte[] array)
static double[]	convertToDouble(byte[] array, double scale)
static double[]	convertToDouble(float[] array)
static double[]	convertToDouble(float[] array, double scale)
static double[]	convertToDouble(int[] array)
static double[]	convertToDouble(int[] array, double scale)
static double[]	convertToDouble(long[] array)
static double[]	convertToDouble(long[] array, double scale)
static double[]	convertToDouble(short[] array)
static double[]	convertToDouble(short[] array, double scale)
static double[]	createArray(double offset, double scale, int size) Creates an array of values x = i * scale + offset
static void	fillArray(boolean[] array, boolean value) fast filling of an array with a default value initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion
static void	fillArray(byte[] array, byte value) fast filling of an array with a default value initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion
static void	fillArray(double[] array, double value) fast filling of an array with a default value initialize a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion
static void	fillArray(double[] array, int indexStart, int indexStop, double value) fast filling of an array with a default value initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion
static void	fillArray(float[] array, float value) fast filling of an array with a default value initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion
static void	fillArray(float[] array, int indexStart, int indexStop, float value) fast filling of an array with a default value initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion
static void	fillArray(int[] array, int value) fast filling of an array with a default value initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion
static void	fillArray(long[] array, long value) fast filling of an array with a default value initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion
static void	fillArray(short[] array, short value) fast filling of an array with a default value initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion
static <T> void	fillArray(T[] array, int indexStart, int indexStop, T value) fast filling of an array with a default value initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion
static <T> void	fillArray(T[] array, T value) fast filling of an array with a default value initialize a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

convertToDouble

public static double[] convertToDouble(boolean[] array)

convertToDouble

public static double[] convertToDouble(boolean[] array,
                                       double scale)

convertToDouble

public static double[] convertToDouble(byte[] array)

convertToDouble

public static double[] convertToDouble(byte[] array,
                                       double scale)

convertToDouble

public static double[] convertToDouble(float[] array)

convertToDouble

public static double[] convertToDouble(float[] array,
                                       double scale)

convertToDouble

public static double[] convertToDouble(int[] array)

convertToDouble

public static double[] convertToDouble(int[] array,
                                       double scale)

convertToDouble

public static double[] convertToDouble(long[] array)

convertToDouble

public static double[] convertToDouble(long[] array,
                                       double scale)

convertToDouble

public static double[] convertToDouble(short[] array)

convertToDouble

public static double[] convertToDouble(short[] array,
                                       double scale)

createArray

public static double[] createArray(double offset,
                                   double scale,
                                   int size)

Creates an array of values x = i * scale + offset

Parameters:

offset - the offset value

scale - the scale value

size - the size of the created array

Returns:

array of values

fillArray

public static void fillArray(boolean[] array,
                             boolean value)

fast filling of an array with a default value
initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion

Parameters:

array - input array

value - value to fill each element

fillArray

public static void fillArray(byte[] array,
                             byte value)

fast filling of an array with a default value
initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion

Parameters:

array - input array

value - value to fill each element

fillArray

public static void fillArray(double[] array,
                             double value)

fast filling of an array with a default value
initialize a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion

Parameters:

array - to be initialized

value - the value for each to be set element

fillArray

public static void fillArray(double[] array,
                             int indexStart,
                             int indexStop,
                             double value)

fast filling of an array with a default value
initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion

Parameters:

array - to be initialised

indexStart - the first index to be set

indexStop - the last index to be set

value - the value for each to be set element

fillArray

public static void fillArray(float[] array,
                             float value)

fast filling of an array with a default value
initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion

Parameters:

array - input array

value - value to fill each element

fillArray

public static void fillArray(float[] array,
                             int indexStart,
                             int indexStop,
                             float value)

fast filling of an array with a default value
initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion

Parameters:

array - to be initialised

indexStart - the first index to be set

indexStop - the last index to be set

value - the value for each to be set element

fillArray

public static void fillArray(int[] array,
                             int value)

fast filling of an array with a default value
initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion

Parameters:

array - input array

value - value to fill each element

fillArray

public static void fillArray(long[] array,
                             long value)

fast filling of an array with a default value
initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion

Parameters:

array - input array

value - value to fill each element

fillArray

public static void fillArray(short[] array,
                             short value)

fast filling of an array with a default value
initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion

Parameters:

array - input array

value - value to fill each element

fillArray

public static <T> void fillArray(T[] array,
                                 int indexStart,
                                 int indexStop,
                                 T value)

fast filling of an array with a default value
initialise a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion

Type Parameters:

T - element type

Parameters:

array - to be initialised

indexStart - the first index to be set

indexStop - the last index to be set

value - the value for each to be set element

fillArray

public static <T> void fillArray(T[] array,
                                 T value)

fast filling of an array with a default value
initialize a smaller piece of the array and use the System.arraycopy call to fill in the rest of the array in an expanding binary fashion

Type Parameters:

T - element type

Parameters:

array - to be initialized

value - the value for each to be set element