public IntervalSet(int... els) {if ( els==null ) {intervals = new ArrayList<Interval>(2); }else {intervals = new ArrayList<Interval>(els.length);for (int e : els) add(e);}}
public IntervalSet(params int[] els){if (els == null){intervals = new ArrayList<Interval>(2);}else{intervals = new ArrayList<Interval>(els.Length);foreach (int e in els){Add(e);}}}