Java BitSet pack(BitSet bitSet)

Description

pack

License

Apache License

Declaration

public static Object pack(BitSet bitSet) 

Method Source Code

//package com.java2s;
/**/*from   w w  w.j  av  a  2  s. c  o m*/
 * 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.ArrayList;
import java.util.BitSet;
import java.util.List;

public class Main {
    public static Object pack(BitSet bitSet) {
        List<Long> values = new ArrayList<Long>();

        long value = 0L;
        int j = 0;

        for (int i = 0; i < bitSet.size();) {
            if (bitSet.get(i)) {
                value |= (1L << j);
            }

            i += 1;
            j += 1;

            if (j == 64) {
                j = 0;
                values.add(value);
                value = 0L;
            }
        }

        if (value != 0) {
            values.add(value);
        }

        return (values.size() > 1) ? values : values.get(0);
    }
}

Related

1. max(BitSet bits)
2. members(BitSet set)
3. nextClearBitModulo(int index, int poolSize, BitSet bitSet)
4. not(BitSet bitSets)
5. or(BitSet bs1, BitSet bs2)
6. padToByteBoundary(BitSet actualParameter, int sizeInBits, int byteBoundLength, boolean preserveFirstAsSign)
7. parseBitSet(byte[] sfData, int offset, int length)
8. pickRandomSetIndexFromBitSet(BitSet bitset)
9. printBitSet(BitSet bs)