深度為長度為
()略
()表的長度為深度為
()head(tail(head(head(head(tail(tail(tail(tail(A)))))))))
共享結構廣義表A=(((bc)d)(a)((a)((bc)d))e())的存儲表示
[] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] [] []
From:http://tw.wingwit.com/Article/program/sjjg/201311/23035.html