com.nwawsoft.util.natives

Class ArrayFunctions

java.lang.Object

com.nwawsoft.util.natives.ArrayFunctions

public class ArrayFunctions
extends java.lang.Object

Supplies functions to create a new Array of any type with a new size. This can bypass the static size of arrays in Java. However, you should really never do this. Using any of these functions means you should have taken a dynamic data structure (like List) in the first place.

Constructor Summary

Constructors

Constructor and Description
ArrayFunctions()

Method Summary

Modifier and Type	Method and Description
static java.lang.Object[]	changeArraySize(java.lang.Object[] oldArray, int newSize) Returns an Object-Array with the specified size.
static java.lang.Object[]	clear(java.lang.Object[] oldArray) Returns an empty Object-Array with the size of the old Array.
static java.lang.Object[]	deleteFirst(java.lang.Object[] oldArray) Returns an Object-Array with the size of the old Array - 1.
static java.lang.Object[]	expandArray(java.lang.Object[] oldArray, int additions) Returns an array with size oldArray.length+additions.
static java.lang.Object[]	reduceArray(java.lang.Object[] oldArray, int subtractions) Returns an array with size oldArray.length-subtractions.

Methods inherited from class java.lang.Object

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

Constructor Detail

ArrayFunctions

public ArrayFunctions()

Method Detail

expandArray

public static java.lang.Object[] expandArray(java.lang.Object[] oldArray,
                                             int additions)

Returns an array with size oldArray.length+additions. It contains as much of the old Array's content as possible, starting at index 0 and filling the additional spaces with null.

Parameters:

oldArray - an array of any type.

additions - how many spaces more the new array shall have.

Returns:

an array with size oldArray.length+additions which contains as much content of oldArray as possible.

reduceArray

public static java.lang.Object[] reduceArray(java.lang.Object[] oldArray,
                                             int subtractions)

Returns an array with size oldArray.length-subtractions. It contains as much of the old Array's content as possible.

Parameters:

oldArray - an array of any type.

subtractions - how many spaces less the new array shall have.

Returns:

an array with size oldArray.length-subtractions which contains as much content of oldArray as possible.

deleteFirst

public static java.lang.Object[] deleteFirst(java.lang.Object[] oldArray)

Returns an Object-Array with the size of the old Array - 1. It contains all information of the old Array's except the first content gets deleted. All contents move one position more to the beginning of the Array.

Parameters:

oldArray - an array of any type.

Returns:

a new array of size oldArray-1 with the contents of oldArray, except for entry oldArray[0].

changeArraySize

public static java.lang.Object[] changeArraySize(java.lang.Object[] oldArray,
                                                 int newSize)

Returns an Object-Array with the specified size. It contains as much of the old Array's content as possible.

Parameters:

oldArray - an array of any type.

newSize - the size of the new array.

Returns:

an array with size newSize and as much content of oldArray as possible.

clear

public static java.lang.Object[] clear(java.lang.Object[] oldArray)

Returns an empty Object-Array with the size of the old Array.

Parameters:

oldArray - an array of any type.

Returns:

an empty array with the same size as oldArray.