OBHT deletion (3)
Implementation (in class OBHT):
public void delete (Object key) { int b = hash(key); for (;;) { BucketEntry old = buckets[b]; if (old == null) return; else if (old != BucketEntry.FORMER && key.equals(old.key)) { buckets[b] = BucketEntry.FORMER; return; } else b = (b + 1) % buckets.length; }}