Mit allen Klammern

string Airport::extractMin(){	string res = events[0].element;	events[0].key = NOTHING;	last--;	swap(0, last);	int downward = 0;	while (downward < last) {		int child1 = downward*2+1;		int child2 = downward*2+2;		int child = child1;		if (child1 >= last) /* SECOND amendment */ {			break;		}		else if (child2 >= last) {			child = child1;		}		else /* Finding minimum between two children */ {		}		if (events[child2].key < events[child].key) {			child = child2;		}		if (child >= last) {			break;		}		else if (events[downward].key > events[child].key) {			swap(downward, child);			downward = child;		} else {			break;		}	}	return res;}