Java BitSet to String bitsetToString(BitSet bs)

Description

bitset To String

License

Open Source License

Declaration

public static String bitsetToString(BitSet bs) 

Method Source Code

//package com.java2s;
/*//from  w  w  w. ja  v a  2s  . com
 * This file is part of MML.
 *
 *  MML is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  MML is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with MML.  If not, see <http://www.gnu.org/licenses/>.
 *  (c) copyright Desmond Schmidt 2014
 */

import java.util.BitSet;

public class Main {
    public static String bitsetToString(BitSet bs) {
        StringBuilder sb = new StringBuilder();
        int start = 0;
        int old = 0;
        for (int v = bs.nextSetBit(0); v >= 0; v = bs.nextSetBit(v + 1)) {
            if (start == 0) {
                sb.append(v);
                old = v;
            } else if (v - start > 1) {
                if (old < start) {
                    sb.append("-");
                    sb.append(start);
                }
                sb.append(",");
                sb.append(v);
                old = v;
            }
            start = v;
        }
        if (start > old) {
            sb.append("-");
            sb.append(start);
        }
        return sb.toString();
    }
}

Related

1. bitSet2String(BitSet b)
2. bitSet2String(final BitSet bs)
3. bitSetToString(BitSet bits, int length)
4. bitsetToString(BitSet bitset, int width, int height)