ADT串的实现:主要包括以下操作：§　　copy(s1,s2)把串s1复制到s2 §　　concat(s,s1,s2)连接S1,S2，结果放在S中 §　　delete(s,i,j)将串s中从第i个字符开始的连续j个字符删除，如果i+j>s.len则一直删除到串尾 §　　insert(s,s1,i)将串S1插入串S的第i个字符后 -ADT Series achieved : including the following :　copy (s1, s2) copied to the string s1 s2　concat (s, s1, s2) between S1, S2, on the S　delete (s, i, j) s Series i had from the beginning of the characters consecutive j characters deleted if i IGT; s.len will have to delete　insert tail string (s, s1, i) Series S Series S1 insert the characters after i