Java Hash Calculate hashpair(Object o1, Object o2)

Description

hashpair

License

Open Source License

Parameter

Parameter	Description
o1	a parameter
o2	a parameter

Return

the hash value of a pair of objects.

Declaration

public static int hashpair(Object o1, Object o2) 

Method Source Code

//package com.java2s;
/* Copyright (C) 2012 Intel Corporation.
 *     All rights reserved.//from   ww w. j a v  a2s  . c  om
 *           
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *
 * For more about this software visit:
 *      http://www.01.org/GraphBuilder 
 */

public class Main {
    /**
     * @param o1
     * @param o2
     * @return the hash value of a pair of objects.
     */
    public static int hashpair(Object o1, Object o2) {
        return combine(combine(0, o1), o2);
    }

    private static int combine(long seed, Object val) {
        return (int) (val.hashCode() + 0x9e3779b9 + (seed << 6) + (seed >> 2));
    }
}

Related

1. hashName(CharSequence name)
2. hashObject(Object obj)
3. hashOrNull(Object value)
4. hashOrZero(Object o)
5. hashPair(int a, int b)
6. hashPoint(int hashlength, double fraction)
7. hashSetSize(final int nrOfElements)
8. hashThem(Object one, Object two)
9. hashToFloat(int x, int y, long seed)