com.github.azbh111.utils.java.array

类 ArrayUtils

java.lang.Object

com.github.azbh111.utils.java.array.ArrayUtils

public class ArrayUtils
extends java.lang.Object

字段概要

字段

限定符和类型	字段和说明
static boolean[]	EMPTY_BOOLEAN_ARRAY An empty immutable boolean array.
static java.lang.Boolean[]	EMPTY_BOOLEAN_OBJECT_ARRAY An empty immutable Boolean array.
static byte[]	EMPTY_BYTE_ARRAY An empty immutable byte array.
static java.lang.Byte[]	EMPTY_BYTE_OBJECT_ARRAY An empty immutable Byte array.
static char[]	EMPTY_CHAR_ARRAY An empty immutable char array.
static java.lang.Character[]	EMPTY_CHARACTER_OBJECT_ARRAY An empty immutable Character array.
static java.lang.Class<?>[]	EMPTY_CLASS_ARRAY An empty immutable Class array.
static double[]	EMPTY_DOUBLE_ARRAY An empty immutable double array.
static java.lang.Double[]	EMPTY_DOUBLE_OBJECT_ARRAY An empty immutable Double array.
static float[]	EMPTY_FLOAT_ARRAY An empty immutable float array.
static java.lang.Float[]	EMPTY_FLOAT_OBJECT_ARRAY An empty immutable Float array.
static int[]	EMPTY_INT_ARRAY An empty immutable int array.
static java.lang.Integer[]	EMPTY_INTEGER_OBJECT_ARRAY An empty immutable Integer array.
static long[]	EMPTY_LONG_ARRAY An empty immutable long array.
static java.lang.Long[]	EMPTY_LONG_OBJECT_ARRAY An empty immutable Long array.
static java.lang.Object[]	EMPTY_OBJECT_ARRAY An empty immutable Object array.
static short[]	EMPTY_SHORT_ARRAY An empty immutable short array.
static java.lang.Short[]	EMPTY_SHORT_OBJECT_ARRAY An empty immutable Short array.
static java.lang.String[]	EMPTY_STRING_ARRAY An empty immutable String array.

构造器概要

构造器

构造器和说明
ArrayUtils()

方法概要

限定符和类型	方法和说明
static int	indexOf(boolean[] array, boolean valueToFind)
static int	indexOf(boolean[] array, boolean valueToFind, int startIndex, int toIndex)
static int	indexOf(byte[] array, byte valueToFind)
static int	indexOf(byte[] array, byte valueToFind, int startIndex, int toIndex)
static int	indexOf(char[] array, char valueToFind)
static int	indexOf(char[] array, char valueToFind, int startIndex, int toIndex)
static int	indexOf(double[] array, double valueToFind)
static int	indexOf(double[] array, double valueToFind, double tolerance)
static int	indexOf(double[] array, double valueToFind, int startIndex, int toIndex)
static int	indexOf(double[] array, double valueToFind, int startIndex, int toIndex, double tolerance)
static int	indexOf(float[] array, float valueToFind)
static int	indexOf(float[] array, float valueToFind, int startIndex, int toIndex)
static int	indexOf(int[] array, int valueToFind)
static int	indexOf(int[] array, int valueToFind, int startIndex, int toIndex)
static int	indexOf(long[] array, long valueToFind)
static int	indexOf(long[] array, long valueToFind, int startIndex, int toIndex)
static int	indexOf(java.lang.Object[] array, java.lang.Object objectToFind)
static int	indexOf(java.lang.Object[] array, java.lang.Object objectToFind, int startIndex, int toIndex)
static int	indexOf(short[] array, short valueToFind)
static int	indexOf(short[] array, short valueToFind, int startIndex, int toIndex)
static int	indexOfMaxValue(int[] arr)
static int	indexOfMaxValue(int[] arr, int fromIndex, int toIndex) 在[fromIndex,toIndex)范围内查找最大元素的index
static int	lastIndexOf(boolean[] array, boolean valueToFind)
static int	lastIndexOf(boolean[] array, boolean valueToFind, int startIndex, int toIndex)
static int	lastIndexOf(byte[] array, byte valueToFind)
static int	lastIndexOf(byte[] array, byte valueToFind, int startIndex, int toIndex)
static int	lastIndexOf(char[] array, char valueToFind)
static int	lastIndexOf(char[] array, char valueToFind, int startIndex, int toIndex)
static int	lastIndexOf(double[] array, double valueToFind)
static int	lastIndexOf(double[] array, double valueToFind, double tolerance)
static int	lastIndexOf(double[] array, double valueToFind, int startIndex, int toIndex)
static int	lastIndexOf(double[] array, double valueToFind, int startIndex, int toIndex, double tolerance)
static int	lastIndexOf(float[] array, float valueToFind)
static int	lastIndexOf(float[] array, float valueToFind, int startIndex, int toIndex)
static int	lastIndexOf(int[] array, int valueToFind)
static int	lastIndexOf(int[] array, int valueToFind, int startIndex, int toIndex)
static int	lastIndexOf(long[] array, long valueToFind)
static int	lastIndexOf(long[] array, long valueToFind, int startIndex, int toIndex)
static int	lastIndexOf(java.lang.Object[] array, java.lang.Object objectToFind)
static int	lastIndexOf(java.lang.Object[] array, java.lang.Object objectToFind, int startIndex, int toIndex)
static int	lastIndexOf(short[] array, short valueToFind)
static int	lastIndexOf(short[] array, short valueToFind, int startIndex, int toIndex)
static void	reverse(boolean[] arr) 颠倒数组
static void	reverse(boolean[] arr, int fromIndex, int toIndex) 颠倒[fromIndex,toIndex)范围内的数据
static void	reverse(byte[] arr) 颠倒数组
static void	reverse(byte[] arr, int fromIndex, int toIndex) 颠倒[fromIndex,toIndex)范围内的数据
static void	reverse(char[] arr) 颠倒数组
static void	reverse(char[] arr, int fromIndex, int toIndex) 颠倒[fromIndex,toIndex)范围内的数据
static void	reverse(double[] arr) 颠倒数组
static void	reverse(double[] arr, int fromIndex, int toIndex) 颠倒[fromIndex,toIndex)范围内的数据
static void	reverse(float[] arr) 颠倒数组
static void	reverse(float[] arr, int fromIndex, int toIndex) 颠倒[fromIndex,toIndex)范围内的数据
static void	reverse(int[] arr) 颠倒数组
static void	reverse(int[] arr, int fromIndex, int toIndex) 颠倒[fromIndex,toIndex)范围内的数据
static void	reverse(long[] arr) 颠倒数组
static void	reverse(long[] arr, int fromIndex, int toIndex) 颠倒[fromIndex,toIndex)范围内的数据
static void	reverse(short[] arr) 颠倒数组
static void	reverse(short[] arr, int fromIndex, int toIndex) 颠倒[fromIndex,toIndex)范围内的数据
static <T> void	reverse(T[] arr) 颠倒数组
static <T> void	reverse(T[] arr, int fromIndex, int toIndex) 颠倒[fromIndex,toIndex)范围内的数据
static void	swap(boolean[] arr, int leftIndex, int rightIndex)
static void	swap(byte[] arr, int leftIndex, int rightIndex)
static void	swap(char[] arr, int leftIndex, int rightIndex)
static void	swap(double[] arr, int leftIndex, int rightIndex)
static void	swap(float[] arr, int leftIndex, int rightIndex)
static void	swap(int[] arr, int leftIndex, int rightIndex)
static void	swap(long[] arr, int leftIndex, int rightIndex)
static void	swap(short[] arr, int leftIndex, int rightIndex)
static <T> void	swap(T[] arr, int leftIndex, int rightIndex)
static java.lang.String	toString(java.lang.Object[] array)
static boolean[]	unwrap(java.lang.Boolean[] array)
static boolean[]	unwrap(java.lang.Boolean[] array, boolean valueForNull)
static byte[]	unwrap(java.lang.Byte[] array)
static byte[]	unwrap(java.lang.Byte[] array, byte valueForNull)
static char[]	unwrap(java.lang.Character[] array)
static char[]	unwrap(java.lang.Character[] array, char valueForNull)
static double[]	unwrap(java.lang.Double[] array)
static double[]	unwrap(java.lang.Double[] array, double valueForNull)
static float[]	unwrap(java.lang.Float[] array)
static float[]	unwrap(java.lang.Float[] array, float valueForNull)
static int[]	unwrap(java.lang.Integer[] array)
static int[]	unwrap(java.lang.Integer[] array, int valueForNull)
static long[]	unwrap(java.lang.Long[] array)
static long[]	unwrap(java.lang.Long[] array, long valueForNull)
static short[]	unwrap(java.lang.Short[] array)
static short[]	unwrap(java.lang.Short[] array, short valueForNull)
static java.lang.Object	unwrapArray(java.lang.Object array) 通用解包方法 若arr不是包装类型数组,返回null
static java.lang.Boolean[]	wrap(boolean[] array)
static java.lang.Byte[]	wrap(byte[] array)
static java.lang.Character[]	wrap(char[] array)
static java.lang.Double[]	wrap(double[] array)
static java.lang.Float[]	wrap(float[] array)
static java.lang.Integer[]	wrap(int[] array)
static java.lang.Long[]	wrap(long[] array)
static java.lang.Short[]	wrap(short[] array)
static java.lang.Object	wrapArray(java.lang.Object array) 通用包装方法 若arr不是基本数据类型数组,返回null

从类继承的方法 java.lang.Object

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

字段详细资料

EMPTY_OBJECT_ARRAY

public static final java.lang.Object[] EMPTY_OBJECT_ARRAY

An empty immutable Object array.

EMPTY_CLASS_ARRAY

public static final java.lang.Class<?>[] EMPTY_CLASS_ARRAY

An empty immutable Class array.

EMPTY_STRING_ARRAY

public static final java.lang.String[] EMPTY_STRING_ARRAY

An empty immutable String array.

EMPTY_LONG_ARRAY

public static final long[] EMPTY_LONG_ARRAY

An empty immutable long array.

EMPTY_LONG_OBJECT_ARRAY

public static final java.lang.Long[] EMPTY_LONG_OBJECT_ARRAY

An empty immutable Long array.

EMPTY_INT_ARRAY

public static final int[] EMPTY_INT_ARRAY

An empty immutable int array.

EMPTY_INTEGER_OBJECT_ARRAY

public static final java.lang.Integer[] EMPTY_INTEGER_OBJECT_ARRAY

An empty immutable Integer array.

EMPTY_SHORT_ARRAY

public static final short[] EMPTY_SHORT_ARRAY

An empty immutable short array.

EMPTY_SHORT_OBJECT_ARRAY

public static final java.lang.Short[] EMPTY_SHORT_OBJECT_ARRAY

An empty immutable Short array.

EMPTY_BYTE_ARRAY

public static final byte[] EMPTY_BYTE_ARRAY

An empty immutable byte array.

EMPTY_BYTE_OBJECT_ARRAY

public static final java.lang.Byte[] EMPTY_BYTE_OBJECT_ARRAY

An empty immutable Byte array.

EMPTY_DOUBLE_ARRAY

public static final double[] EMPTY_DOUBLE_ARRAY

An empty immutable double array.

EMPTY_DOUBLE_OBJECT_ARRAY

public static final java.lang.Double[] EMPTY_DOUBLE_OBJECT_ARRAY

An empty immutable Double array.

EMPTY_FLOAT_ARRAY

public static final float[] EMPTY_FLOAT_ARRAY

An empty immutable float array.

EMPTY_FLOAT_OBJECT_ARRAY

public static final java.lang.Float[] EMPTY_FLOAT_OBJECT_ARRAY

An empty immutable Float array.

EMPTY_BOOLEAN_ARRAY

public static final boolean[] EMPTY_BOOLEAN_ARRAY

An empty immutable boolean array.

EMPTY_BOOLEAN_OBJECT_ARRAY

public static final java.lang.Boolean[] EMPTY_BOOLEAN_OBJECT_ARRAY

An empty immutable Boolean array.

EMPTY_CHAR_ARRAY

public static final char[] EMPTY_CHAR_ARRAY

An empty immutable char array.

EMPTY_CHARACTER_OBJECT_ARRAY

public static final java.lang.Character[] EMPTY_CHARACTER_OBJECT_ARRAY

An empty immutable Character array.

构造器详细资料

ArrayUtils

public ArrayUtils()

方法详细资料

indexOf

public static int indexOf(boolean[] array,
                          boolean valueToFind)

indexOf

public static int indexOf(boolean[] array,
                          boolean valueToFind,
                          int startIndex,
                          int toIndex)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

返回:

lastIndexOf

public static int lastIndexOf(boolean[] array,
                              boolean valueToFind)

lastIndexOf

public static int lastIndexOf(boolean[] array,
                              boolean valueToFind,
                              int startIndex,
                              int toIndex)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

返回:

indexOf

public static int indexOf(char[] array,
                          char valueToFind)

indexOf

public static int indexOf(char[] array,
                          char valueToFind,
                          int startIndex,
                          int toIndex)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

返回:

lastIndexOf

public static int lastIndexOf(char[] array,
                              char valueToFind)

lastIndexOf

public static int lastIndexOf(char[] array,
                              char valueToFind,
                              int startIndex,
                              int toIndex)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

返回:

indexOf

public static int indexOf(byte[] array,
                          byte valueToFind)

indexOf

public static int indexOf(byte[] array,
                          byte valueToFind,
                          int startIndex,
                          int toIndex)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

返回:

lastIndexOf

public static int lastIndexOf(byte[] array,
                              byte valueToFind)

lastIndexOf

public static int lastIndexOf(byte[] array,
                              byte valueToFind,
                              int startIndex,
                              int toIndex)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

返回:

indexOf

public static int indexOf(short[] array,
                          short valueToFind)

indexOf

public static int indexOf(short[] array,
                          short valueToFind,
                          int startIndex,
                          int toIndex)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

返回:

lastIndexOf

public static int lastIndexOf(short[] array,
                              short valueToFind)

lastIndexOf

public static int lastIndexOf(short[] array,
                              short valueToFind,
                              int startIndex,
                              int toIndex)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

返回:

indexOf

public static int indexOf(int[] array,
                          int valueToFind)

indexOf

public static int indexOf(int[] array,
                          int valueToFind,
                          int startIndex,
                          int toIndex)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

返回:

lastIndexOf

public static int lastIndexOf(int[] array,
                              int valueToFind)

lastIndexOf

public static int lastIndexOf(int[] array,
                              int valueToFind,
                              int startIndex,
                              int toIndex)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

返回:

indexOf

public static int indexOf(long[] array,
                          long valueToFind)

indexOf

public static int indexOf(long[] array,
                          long valueToFind,
                          int startIndex,
                          int toIndex)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

返回:

lastIndexOf

public static int lastIndexOf(long[] array,
                              long valueToFind)

lastIndexOf

public static int lastIndexOf(long[] array,
                              long valueToFind,
                              int startIndex,
                              int toIndex)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

返回:

indexOf

public static int indexOf(float[] array,
                          float valueToFind)

indexOf

public static int indexOf(float[] array,
                          float valueToFind,
                          int startIndex,
                          int toIndex)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

返回:

lastIndexOf

public static int lastIndexOf(float[] array,
                              float valueToFind)

lastIndexOf

public static int lastIndexOf(float[] array,
                              float valueToFind,
                              int startIndex,
                              int toIndex)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

返回:

indexOf

public static int indexOf(double[] array,
                          double valueToFind)

indexOf

public static int indexOf(double[] array,
                          double valueToFind,
                          int startIndex,
                          int toIndex)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

返回:

lastIndexOf

public static int lastIndexOf(double[] array,
                              double valueToFind)

lastIndexOf

public static int lastIndexOf(double[] array,
                              double valueToFind,
                              int startIndex,
                              int toIndex)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

返回:

indexOf

public static int indexOf(double[] array,
                          double valueToFind,
                          double tolerance)

参数:

array -

valueToFind -

tolerance - 精度

返回:

indexOf

public static int indexOf(double[] array,
                          double valueToFind,
                          int startIndex,
                          int toIndex,
                          double tolerance)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

tolerance - 精度

返回:

lastIndexOf

public static int lastIndexOf(double[] array,
                              double valueToFind,
                              double tolerance)

参数:

array -

valueToFind -

tolerance - 精度

返回:

lastIndexOf

public static int lastIndexOf(double[] array,
                              double valueToFind,
                              int startIndex,
                              int toIndex,
                              double tolerance)

参数:

array -

valueToFind -

startIndex - include

toIndex - not include

tolerance - 精度

返回:

indexOf

public static int indexOf(java.lang.Object[] array,
                          java.lang.Object objectToFind)

indexOf

public static int indexOf(java.lang.Object[] array,
                          java.lang.Object objectToFind,
                          int startIndex,
                          int toIndex)

参数:

array -

objectToFind -

startIndex - include

toIndex - not include

返回:

lastIndexOf

public static int lastIndexOf(java.lang.Object[] array,
                              java.lang.Object objectToFind)

lastIndexOf

public static int lastIndexOf(java.lang.Object[] array,
                              java.lang.Object objectToFind,
                              int startIndex,
                              int toIndex)

参数:

array -

objectToFind -

startIndex - include

toIndex - not include

返回:

wrap

public static java.lang.Boolean[] wrap(boolean[] array)

wrap

public static java.lang.Character[] wrap(char[] array)

wrap

public static java.lang.Byte[] wrap(byte[] array)

wrap

public static java.lang.Short[] wrap(short[] array)

wrap

public static java.lang.Integer[] wrap(int[] array)

wrap

public static java.lang.Long[] wrap(long[] array)

wrap

public static java.lang.Float[] wrap(float[] array)

wrap

public static java.lang.Double[] wrap(double[] array)

unwrap

public static boolean[] unwrap(java.lang.Boolean[] array)

unwrap

public static boolean[] unwrap(java.lang.Boolean[] array,
                               boolean valueForNull)

unwrap

public static char[] unwrap(java.lang.Character[] array)

unwrap

public static char[] unwrap(java.lang.Character[] array,
                            char valueForNull)

unwrap

public static byte[] unwrap(java.lang.Byte[] array)

unwrap

public static byte[] unwrap(java.lang.Byte[] array,
                            byte valueForNull)

unwrap

public static short[] unwrap(java.lang.Short[] array,
                             short valueForNull)

unwrap

public static short[] unwrap(java.lang.Short[] array)

unwrap

public static int[] unwrap(java.lang.Integer[] array)

unwrap

public static int[] unwrap(java.lang.Integer[] array,
                           int valueForNull)

unwrap

public static long[] unwrap(java.lang.Long[] array)

unwrap

public static long[] unwrap(java.lang.Long[] array,
                            long valueForNull)

unwrap

public static float[] unwrap(java.lang.Float[] array)

unwrap

public static float[] unwrap(java.lang.Float[] array,
                             float valueForNull)

unwrap

public static double[] unwrap(java.lang.Double[] array)

unwrap

public static double[] unwrap(java.lang.Double[] array,
                              double valueForNull)

unwrapArray

public static java.lang.Object unwrapArray(java.lang.Object array)

通用解包方法 若arr不是包装类型数组,返回null

参数:

array -

返回:

wrapArray

public static java.lang.Object wrapArray(java.lang.Object array)

通用包装方法 若arr不是基本数据类型数组,返回null

参数:

array -

返回:

indexOfMaxValue

public static int indexOfMaxValue(int[] arr)

indexOfMaxValue

public static int indexOfMaxValue(int[] arr,
                                  int fromIndex,
                                  int toIndex)

在[fromIndex,toIndex)范围内查找最大元素的index

参数:

arr -

fromIndex -

toIndex -

返回:

swap

public static void swap(byte[] arr,
                        int leftIndex,
                        int rightIndex)

swap

public static void swap(short[] arr,
                        int leftIndex,
                        int rightIndex)

swap

public static void swap(int[] arr,
                        int leftIndex,
                        int rightIndex)

swap

public static void swap(long[] arr,
                        int leftIndex,
                        int rightIndex)

swap

public static void swap(float[] arr,
                        int leftIndex,
                        int rightIndex)

swap

public static void swap(double[] arr,
                        int leftIndex,
                        int rightIndex)

swap

public static void swap(boolean[] arr,
                        int leftIndex,
                        int rightIndex)

swap

public static void swap(char[] arr,
                        int leftIndex,
                        int rightIndex)

swap

public static <T> void swap(T[] arr,
                            int leftIndex,
                            int rightIndex)

reverse

public static <T> void reverse(T[] arr)

颠倒数组

参数:

arr -

reverse

public static <T> void reverse(T[] arr,
                               int fromIndex,
                               int toIndex)

颠倒[fromIndex,toIndex)范围内的数据

参数:

arr -

fromIndex -

toIndex -

reverse

public static void reverse(byte[] arr)

颠倒数组

参数:

arr -

reverse

public static void reverse(byte[] arr,
                           int fromIndex,
                           int toIndex)

颠倒[fromIndex,toIndex)范围内的数据

参数:

arr -

fromIndex -

toIndex -

reverse

public static void reverse(short[] arr)

颠倒数组

参数:

arr -

reverse

public static void reverse(short[] arr,
                           int fromIndex,
                           int toIndex)

颠倒[fromIndex,toIndex)范围内的数据

参数:

arr -

fromIndex -

toIndex -

reverse

public static void reverse(int[] arr)

颠倒数组

参数:

arr -

reverse

public static void reverse(int[] arr,
                           int fromIndex,
                           int toIndex)

颠倒[fromIndex,toIndex)范围内的数据

参数:

arr -

fromIndex -

toIndex -

reverse

public static void reverse(long[] arr)

颠倒数组

参数:

arr -

reverse

public static void reverse(long[] arr,
                           int fromIndex,
                           int toIndex)

颠倒[fromIndex,toIndex)范围内的数据

参数:

arr -

fromIndex -

toIndex -

reverse

public static void reverse(float[] arr)

颠倒数组

参数:

arr -

reverse

public static void reverse(float[] arr,
                           int fromIndex,
                           int toIndex)

颠倒[fromIndex,toIndex)范围内的数据

参数:

arr -

fromIndex -

toIndex -

reverse

public static void reverse(double[] arr)

颠倒数组

参数:

arr -

reverse

public static void reverse(double[] arr,
                           int fromIndex,
                           int toIndex)

颠倒[fromIndex,toIndex)范围内的数据

参数:

arr -

fromIndex -

toIndex -

reverse

public static void reverse(boolean[] arr)

颠倒数组

参数:

arr -

reverse

public static void reverse(boolean[] arr,
                           int fromIndex,
                           int toIndex)

颠倒[fromIndex,toIndex)范围内的数据

参数:

arr -

fromIndex -

toIndex -

reverse

public static void reverse(char[] arr)

颠倒数组

参数:

arr -

reverse

public static void reverse(char[] arr,
                           int fromIndex,
                           int toIndex)

颠倒[fromIndex,toIndex)范围内的数据

参数:

arr -

fromIndex -

toIndex -

toString

public static java.lang.String toString(java.lang.Object[] array)