public class

ArrayUtil

extends Object
java.lang.Object
   ↳ com.pnfsoftware.jeb.util.collect.ArrayUtil

Class Overview

Utility methods for arrays.

Summary

Fields
public static final boolean[] NO_BOOLEAN
public static final byte[] NO_BYTE
public static final char[] NO_CHAR
public static final double[] NO_DOUBLE
public static final float[] NO_FLOAT
public static final int[] NO_INT
public static final long[] NO_LONG
public static final Object[] NO_OBJECT An empty immutable Object Object[] array.
public static final short[] NO_SHORT
public static final String[] NO_STRING An empty immutable String String[] array.
Public Constructors
ArrayUtil()
Public Methods
static List<Byte> asList(byte[] array)
A variant of asList(Object) that accepts primitives.
static List<Boolean> asList(boolean[] array)
A variant of asList(Object) that accepts primitives.
static List<Short> asList(short[] array)
A variant of asList(Object) that accepts primitives.
static List<Character> asList(char[] array)
A variant of asList(Object) that accepts primitives.
static List<Integer> asList(int[] array)
A variant of asList(Object) that accepts primitives.
static List<Double> asList(double[] array)
A variant of asList(Object) that accepts primitives.
static List<Float> asList(float[] array)
A variant of asList(Object) that accepts primitives.
static List<Long> asList(long[] array)
A variant of asList(Object) that accepts primitives.
static int[] bytesToIntegers(byte[] input)
Convert a byte array to an int array with the same exact values (that means the bytes are sign extended).
static void checkOffsetAndCount(int arrayLength, int offset, int count)
static int compareBytes(byte[] array1, int pos1, byte[] array2, int pos2, int size)
Compare arrays of bytes.
static void copyBytes(byte[] dst, int dstOffset, byte[] src, int srcOffset, int size)
Wrapper around Java's arraycopy().
static int find(int[] array, int value)
static int find(char[] array, char value)
static int find(long[] array, long value)
static int find(float[] array, float value)
static int find(boolean[] array, boolean value)
static int find(short[] array, short value)
static int find(byte[] array, byte value)
static int find(double[] array, double value)
static int findByEquality(Object[] array, Object value)
static int findByReference(Object[] array, Object value)
static byte[] integersToBytes(int[] input)
Convert an int array into a byte array by casting all integers to bytes.
static boolean isSled(byte[] array, byte value)
Check if an array contains a same repeated value.
static void swap(short[] array)
Flip the order of an array of shorts.
static void swap(char[] array)
Flip the order of an array of chars.
static void swap(float[] array, int offset, int size)
Flip the order of an array of floats.
static <T> void swap(T[] array)
Flip the order of an array of generic objects.
static void swap(byte[] array, int offset, int size)
Flip the order of an array of bytes.
static void swap(char[] array, int offset, int size)
Flip the order of an array of chars.
static void swap(int[] array, int offset, int size)
Flip the order of an array of ints.
static void swap(byte[] array)
Flip the order of an array of bytes.
static void swap(double[] array)
Flip the order of an array of doubles.
static void swap(int[] array)
Flip the order of an array of ints.
static void swap(boolean[] array, int offset, int size)
Flip the order of an array of booleans.
static <T> void swap(T[] array, int offset, int size)
Flip the order of an array of generic objects.
static void swap(float[] array)
Flip the order of an array of floats.
static void swap(long[] array, int offset, int size)
Flip the order of an array of longs.
static void swap(double[] array, int offset, int size)
Flip the order of an array of doubles.
static void swap(boolean[] array)
Flip the order of an array of booleans.
static void swap(long[] array)
Flip the order of an array of longs.
static void swap(short[] array, int offset, int size)
Flip the order of an array of shorts.
static int[] unsignedBytesToIntegers(byte[] input)
Convert an array of unsigned bytes to an array of integers.
[Expand]
Inherited Methods
From class java.lang.Object

Fields

public static final boolean[] NO_BOOLEAN

public static final byte[] NO_BYTE

public static final char[] NO_CHAR

public static final double[] NO_DOUBLE

public static final float[] NO_FLOAT

public static final int[] NO_INT

public static final long[] NO_LONG

public static final Object[] NO_OBJECT

An empty immutable Object Object[] array.

public static final short[] NO_SHORT

public static final String[] NO_STRING

An empty immutable String String[] array.

Public Constructors

public ArrayUtil ()

Public Methods

public static List<Byte> asList (byte[] array)

A variant of asList(Object) that accepts primitives.

public static List<Boolean> asList (boolean[] array)

A variant of asList(Object) that accepts primitives.

public static List<Short> asList (short[] array)

A variant of asList(Object) that accepts primitives.

public static List<Character> asList (char[] array)

A variant of asList(Object) that accepts primitives.

public static List<Integer> asList (int[] array)

A variant of asList(Object) that accepts primitives.

public static List<Double> asList (double[] array)

A variant of asList(Object) that accepts primitives.

public static List<Float> asList (float[] array)

A variant of asList(Object) that accepts primitives.

public static List<Long> asList (long[] array)

A variant of asList(Object) that accepts primitives.

public static int[] bytesToIntegers (byte[] input)

Convert a byte array to an int array with the same exact values (that means the bytes are sign extended).

Parameters
input byte array
Returns
  • int array

public static void checkOffsetAndCount (int arrayLength, int offset, int count)

public static int compareBytes (byte[] array1, int pos1, byte[] array2, int pos2, int size)

Compare arrays of bytes. This method raises an ArrayIndexOutOfBoundsException exception if either one of the input arrays does not contain enough bytes to be compared.

Parameters
array1 first array
pos1 where to start in the first array
array2 second array
pos2 where to start in the second array
size number of bytes to be compared
Returns
  • standard -1/0/+1 comparison result

public static void copyBytes (byte[] dst, int dstOffset, byte[] src, int srcOffset, int size)

Wrapper around Java's arraycopy().

Copy bytes from a source to a destination. If the destination and source arrays are the same, potential overlaps are properly handled. This method does not validate bounds or arguments: NullPointerException and ArrayIndexOutOfBoundsException can be raised.

Parameters
dst destination array
dstOffset start offset in the destination array
src source array source array, potentially the same as the destination array
srcOffset start offset in the source array
size number of bytes to be copied

public static int find (int[] array, int value)

public static int find (char[] array, char value)

public static int find (long[] array, long value)

public static int find (float[] array, float value)

public static int find (boolean[] array, boolean value)

public static int find (short[] array, short value)

public static int find (byte[] array, byte value)

public static int find (double[] array, double value)

public static int findByEquality (Object[] array, Object value)

public static int findByReference (Object[] array, Object value)

public static byte[] integersToBytes (int[] input)

Convert an int array into a byte array by casting all integers to bytes.

Parameters
input int array
Returns
  • byte array

public static boolean isSled (byte[] array, byte value)

Check if an array contains a same repeated value.

Parameters
array the array to be checked
value the sled value
Returns
  • true if all bytes in the array are equal to the provided value

public static void swap (short[] array)

Flip the order of an array of shorts.

public static void swap (char[] array)

Flip the order of an array of chars.

public static void swap (float[] array, int offset, int size)

Flip the order of an array of floats.

public static void swap (T[] array)

Flip the order of an array of generic objects.

public static void swap (byte[] array, int offset, int size)

Flip the order of an array of bytes.

public static void swap (char[] array, int offset, int size)

Flip the order of an array of chars.

public static void swap (int[] array, int offset, int size)

Flip the order of an array of ints.

public static void swap (byte[] array)

Flip the order of an array of bytes.

public static void swap (double[] array)

Flip the order of an array of doubles.

public static void swap (int[] array)

Flip the order of an array of ints.

public static void swap (boolean[] array, int offset, int size)

Flip the order of an array of booleans.

public static void swap (T[] array, int offset, int size)

Flip the order of an array of generic objects.

public static void swap (float[] array)

Flip the order of an array of floats.

public static void swap (long[] array, int offset, int size)

Flip the order of an array of longs.

public static void swap (double[] array, int offset, int size)

Flip the order of an array of doubles.

public static void swap (boolean[] array)

Flip the order of an array of booleans.

public static void swap (long[] array)

Flip the order of an array of longs.

public static void swap (short[] array, int offset, int size)

Flip the order of an array of shorts.

public static int[] unsignedBytesToIntegers (byte[] input)

Convert an array of unsigned bytes to an array of integers.

Parameters
input byte array, for which the bytes are treated as unsigned
Returns
  • int array