Solve the length of seq list int Length( Seq list &l)i return Length Find k th: return the k th data in ListData GetData( Seq list &l, int i)t if (i>=0&&i< Llength return Ldata; e print(“参数i不合理!Ⅶn”); eIs◼ Solve the length of SeqList int Length ( SeqList & L ) { return L.length; } ◼ Find k_th：return the k_th data in l ListData GetData ( SeqList &L, int i ) { if ( i >= 0 && i < L.length ) return L.data[i]; else printf ( “参数 i 不合理！\n” ); }