comefrom: <awangdev>252. Meeting Rooms_1.java
code: public boolean canAttendMeetings(int[][] intervals) {
          if (intervals == null) return true;
          Arrays.sort(intervals, Comparator.comparing(i -> i[0]));
  
          for (int i = 0; i < intervals.length - 1; i++) {
              if (intervals[i][1] > intervals[i + 1][0]) return false;
          }
          return true;
      }
masked: public boolean var_0 ( int [ ] [ ] var_1 ) {
    if ( var_1 == null ) return true ;
    Arrays . sort ( var_1 , Comparator . comparing ( var_2 -> var_2 [ 0 ] ) ) ;
    for ( int var_2 = 0 ;
    var_2 < var_1 . length - 1 ;
    var_2 ++ ) {
      if ( var_1 [ var_2 ] [ 1 ] > var_1 [ var_2 + 1 ] [ 0 ] ) return false ;
    }
    return true ;
  }
  