org.openingo.jdkits.collection

Class ArrayKit

java.lang.Object

org.openingo.jdkits.collection.ArrayKit

public final class ArrayKit
extends Object

数组工具

Author:

Qicz

Method Summary

Modifier and Type	Method and Description
static <T> T[]	empty(Integer size) 返回一个空数组
static <T> T[]	intersect(T[] arr1, T[] arr2) Arr1 intersect Arr2 交集
static <T> boolean	isEmpty(T[] array) 数组是否为空
static <T> T[]	minus(T[] arr1, T[] arr2) Arr1 minus Arr2 差集
static <T> T[]	removeAll(T[] arr, T[] removingArr) 从arr中移除removingArr的内容
static <T> void	reverse(T[] array) 翻转一个Array
static <T> List<T>	toList(T[] array) 数组转化为List
static String	toString(Object obj) 数组或集合转String
static <T> T[]	union(T[] arr1, T[] arr2) Arr1 union Arr2 合集

Methods inherited from class java.lang.Object

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

Method Detail

empty

public static <T> T[] empty(Integer size)

返回一个空数组

Type Parameters:

T -

Parameters:

size -

union

public static <T> T[] union(T[] arr1,
                            T[] arr2)

Arr1 union Arr2 合集

Parameters:

arr1 -

arr2 -

intersect

public static <T> T[] intersect(T[] arr1,
                                T[] arr2)

Arr1 intersect Arr2 交集

Parameters:

arr1 -

arr2 -

minus

public static <T> T[] minus(T[] arr1,
                            T[] arr2)

Arr1 minus Arr2 差集

Parameters:

arr1 -

arr2 -

reverse

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

翻转一个Array

Parameters:

array -

removeAll

public static <T> T[] removeAll(T[] arr,
                                T[] removingArr)

从arr中移除removingArr的内容

Type Parameters:

T -

Parameters:

arr -

removingArr -

Returns:

toList

public static <T> List<T> toList(T[] array)

数组转化为List

Type Parameters:

T -

Parameters:

array -

toString

public static String toString(Object obj)

数组或集合转String

Parameters:

obj - 集合或数组对象

Returns:

数组字符串，与集合转字符串格式相同

isEmpty

public static <T> boolean isEmpty(T[] array)

数组是否为空

Type Parameters:

T - 数组元素类型

Parameters:

array - 数组

Returns:

是否为空