question: public int mapDcdColumnID ( int colID ) { for ( int i = 0 ; i < _dcdColumnMap . length ; i ++ ) { int st = ( i == 0 ? 1 : _dcdColumnMap [ i - 1 ] + 1 + 1 ) ; int end = _dcdColumnMap [ i ] + 1 ; if ( colID >= st && colID <= end ) return i + 1 ; } return - 1 ; }
target:  Given a dummycoded column id, find the corresponding original column ID.