Java 返回指定数组的适当哈希代码。

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返回指定数组的适当哈希代码。

实例源码：

源代码：

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//package com.nowjava;/** from N  o w  J a v a . c o m**/

import java.lang.reflect.Array;

public class Main {

public static void main(String[] argv) throws Exception {

Object array = "nowjava.com";

System.out.println(computeHashCode(array));

}

/**

* Returns a suitable hash code for the specified array. If the passed

* object is <code>null</code>, <code>0</code> is returned.

* It is allowed to pass an object that is not an array, in this case,

* the hash code of the object will be returned. Otherwise the hash code

* will be based on the array elements. <code>null</code> elements are

* allowed.

* This method does not handle multidimensional arrays, i.e. if an

* array contains another array, the hash code is based on identity.

* @param array the array

* @return a suitable hash code

public static int computeHashCode(Object array) {

if (null == array)

return 0;

if (!array.getClass().isArray())

return array.hashCode();

int length = Array.getLength(array);

int hashCode = 17;

for (int ii = 0; ii < length; ii++) {
/**代码未完, 请加载全部代码(NowJava.com).**/

​x
 
​
​
//package com.nowjava;/** from N  o w  J a v a . c o m**/
​
import java.lang.reflect.Array;
​
​
public class Main {
​
    public static void main(String[] argv) throws Exception {
​
        Object array = "nowjava.com";
​
        System.out.println(computeHashCode(array));
​
    }
​
​
    /**
​
     * Returns a suitable hash code for the specified array. If the passed
​
     * object is <code>null</code>, <code>0</code> is returned.
​
     * It is allowed to pass an object that is not an array, in this case, 
​
     * the hash code of the object will be returned. Otherwise the hash code
​
     * will be based on the array elements. <code>null</code> elements are
​
     * allowed.
​
     * This method does not handle multidimensional arrays, i.e. if an
​
     * array contains another array, the hash code is based on identity.
​
     * @param array the array
​
     * @return a suitable hash code
​
     */
​
    public static int computeHashCode(Object array) {
​
        if (null == array)
​
            return 0;
​
        if (!array.getClass().isArray())
​
            return array.hashCode();
​
        int length = Array.getLength(array);
​
        int hashCode = 17;
​
        for (int ii = 0; ii < length; ii++) {
/**代码未完, 请加载全部代码(NowJava.com).**/