flash如何连接后台的数据库开发，下载后你会彻底明白了！-flash how to connect the background of database development, after downloading you will understand completely!

HashTable实例 public class HashTable_msg { public HashTable_msg() { String sum_sql="select mobilenum,count(*) from SJSJ_Msg where (left(in_date,6)=(select left(CONVERT(varchar(12) , getdate(), 112 ),6)))group by mobilenum" Hashtable<

构造哈夫曼树的程序 根据权值构造哈夫曼树存放于ht数组，函数wpl用来计算哈夫曼树的解劝路径长度WPL-to build the huffman