Method remove

classpath/java/util/ArrayDeque.java:185–208

(Object o, boolean first)

  }
  
  private boolean remove(Object o, boolean first) {
    modCount++;
    
    Iterator<T> it;
    if (first) {
      it = iterator();
    } else {
      it = descendingIterator();
    }
    while (it.hasNext()) {
      T next = it.next();
      if (next == null) {
        if (o == null) {
          it.remove();
          return true;
        }
      } else if (next.equals(o)) {
        it.remove();
        return true;
      }
    }
    
    return false;
  }

  @Override
  public boolean removeFirstOccurrence(Object o) {