Include : direct sum code , cartesian product co de , tensor product code , extend hamming code ; and 7 - th part , we summarize the total paper , and put forward some problem which should be solved in perhaps development direction in the future . in the paper , main results gather in the 3 - rd , 4 - th , 5 - th , 6 - th part 第七章對全章作了一個總結(jié),并對未來可能的發(fā)展方向提出了一些有待研究的問題。本文的主要結(jié)果集中在第三章、第四章、第五章、第六章。