Java Long Number Create toLong(boolean... a)

Description

Packs boolean array to integer, the booleans with greater indices go first

License

Apache License

Parameter

Parameter	Description
a	a parameter

Declaration

public static long toLong(boolean... a) 

Method Source Code

//package com.java2s;
/*//  w  ww  .  j  a v  a  2s.com
 *
 *  Copyright 2013 Netflix, Inc.
 *
 *     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.
 *
 */

public class Main {
    /**
     * Packs boolean array to integer, the booleans with greater indices go
     * first
     *
     * @param a
     * @return
     */
    public static long toLong(boolean... a) {
        if (a.length >= 64) {
            throw new IllegalArgumentException(
                    "while packing boolean array in int, the array length should be less than 32");
        }

        int n = 0;
        for (int i = (a.length - 1); i >= 0; --i) {
            n = (n << 1) | (a[i] ? 1 : 0);
        }
        return n;
    }
}

Related

1. convertLongtoMultiByte(long val)
2. fromLong(byte[] buffer, int pos, long l)
3. fromLong(long value, byte[] arr, int offset)
4. fromLongLE(byte src[], int offset, int numBytes)
5. toLong(boolean b)
6. toLong(byte b)
7. toLong(byte byte7, byte byte6, byte byte5, byte byte4, byte byte3, byte byte2, byte byte1, byte byte0)
8. toLong(byte... b)
9. toLong(byte... b)