Java Array xor xor(byte[] left, byte[] right)

Description

xor

License

Apache License

Return

The bitwise XOR of the inputs. The output will be the same length as the longer input, but if either input is null, the output will be null.

Declaration

public static byte[] xor(byte[] left, byte[] right) 

Method Source Code

//package com.java2s;
/*//from  w  w  w . j  av  a  2 s  .c om
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

import java.util.*;

public class Main {
    /**
     * @return The bitwise XOR of the inputs. The output will be the same length as the
     * longer input, but if either input is null, the output will be null.
     */
    public static byte[] xor(byte[] left, byte[] right) {
        if (left == null || right == null)
            return null;
        if (left.length > right.length) {
            byte[] swap = left;
            left = right;
            right = swap;
        }

        // left.length is now <= right.length
        byte[] out = Arrays.copyOf(right, right.length);
        for (int i = 0; i < left.length; i++) {
            out[i] = (byte) ((left[i] & 0xFF) ^ (right[i] & 0xFF));
        }
        return out;
    }
}

Related

1. XorArray(byte[] pbSource, int nSourceOffset, byte[] pbBuffer, int nBufferOffset, int nLength)
2. xorArrayBytes(byte[] operador1, byte[] operador2)
3. xorArrays(byte[] a, byte[] b)
4. xorArrays(byte[] a, byte[] b)