java.util.BitSet — set() doesn't work as expected

Question

Am I missing something painfully obvious? Or does just nobody in the world actually use java.util.BitSet?

The following test fails:

@Test
public voi         


        

Answer 1

Good Casper! Your small improvement should indeed have been present in the original BitSet java def! I also suggest this (append() and concat() are useful for various usages)

import java.util.BitSet;

public class fixBitSet extends BitSet {

  public int fsize = 0;

  public void set(int k, boolean value) {
    if (k >= fsize)
      fsize = k + 1;
    super.set(k, value);
  }

  public void append(fixBitSet bs) {
    for (int k = 0; k < bs.fsize; k++)
      super.set(fsize + k, bs.get(k));
    fsize += bs.fsize;
  }

  public static fixBitSet concat(fixBitSet[] vbs) {
    final fixBitSet bs = new fixBitSet();
    for (fixBitSet xbs : vbs)
      bs.append(xbs);
    return (bs);
  }

}