edu.ie3.util

Class ArrayHelper

java.lang.Object

edu.ie3.util.ArrayHelper

public class ArrayHelper
extends java.lang.Object

Contains convenience methods for arrays

Method Summary

Modifier and Type	Method and Description
static org.apache.commons.math3.complex.Complex[]	add(org.apache.commons.math3.complex.Complex[] a, org.apache.commons.math3.complex.Complex[] b) Element wise addition of two double arrays
static double[]	add(double[] a, double[] b) Element wise addition of two double arrays
static boolean	arrayContainsValue(int[] arr, int value) Return true, if the given int is contained in the given array
static boolean	arrayContainsValue(java.lang.Object[] arr, java.lang.Object obj) Return true, if the given object is contained in the given array
static double[]	pow(java.lang.Double[] a, double e) Builds the exponential value of each of the Array elements
static org.apache.commons.math3.complex.Complex[]	subtract(org.apache.commons.math3.complex.Complex[] a, org.apache.commons.math3.complex.Complex[] b) Element wise subtraction
static double[]	subtract(double[] a, double[] b) Element wise subtraction

Methods inherited from class java.lang.Object

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

Method Detail

arrayContainsValue

public static boolean arrayContainsValue(java.lang.Object[] arr,
                                         java.lang.Object obj)

Return true, if the given object is contained in the given array

Parameters:

arr - Array to check

obj - Object to be checked

Returns:

true, if the value lays inside the interval

arrayContainsValue

public static boolean arrayContainsValue(int[] arr,
                                         int value)

Return true, if the given int is contained in the given array

Parameters:

arr - Array to check

value - Object to be checked

Returns:

true, if the value lays inside the interval

add

public static double[] add(double[] a,
                           double[] b)

Element wise addition of two double arrays

Parameters:

a - Array of double values for the first addend

b - Array of double values for the second addend

Returns:

c Double array with the summation of a and b

add

public static org.apache.commons.math3.complex.Complex[] add(org.apache.commons.math3.complex.Complex[] a,
                                                             org.apache.commons.math3.complex.Complex[] b)

Element wise addition of two double arrays

Parameters:

a - Array of Complex values for the first addend

b - Array of Complex values for the second addend

Returns:

c Double array with the summation of a and b

subtract

public static double[] subtract(double[] a,
                                double[] b)

Element wise subtraction

Parameters:

a - Left hand side Array of double values

b - Right hand side Array of double values

Returns:

The Array of double values built by subtraction

subtract

public static org.apache.commons.math3.complex.Complex[] subtract(org.apache.commons.math3.complex.Complex[] a,
                                                                  org.apache.commons.math3.complex.Complex[] b)

Element wise subtraction

Parameters:

a - Left hand side Array of Complex values

b - Right hand side Array of Complex values

Returns:

The Array of Complex values built by subtraction

pow

public static double[] pow(java.lang.Double[] a,
                           double e)

Builds the exponential value of each of the Array elements

Parameters:

a - Array of Complex values to build the exponential value

e - Exponent

Returns:

The Array of Complex values