return the title of the kth column . requires 0 < = k < columns . concode_field_sep HashSet<Row> _rows concode_elem_sep String[] _titles concode_field_sep boolean add concode_elem_sep Table cartesianProduct concode_elem_sep Iterator<Row> iterator concode_elem_sep void print concode_elem_sep Table select concode_elem_sep Table select concode_elem_sep int size concode_elem_sep int columns concode_elem_sep Table readTable concode_elem_sep int findColumn concode_elem_sep Table findInnerJoin concode_elem_sep void writeTable concode_elem_sep boolean equijoin
String function ( int arg0 ) { return _titles [ arg0 ] ; }