1、设每个记录有下列数据项：电话号码、用户名、地址

2、从键盘输入各记录，分别以电话号码和用户名为关键字建立哈希表；

3、采用再哈希法解决冲突；

4、查找并显示给定电话号码的记录；

5、查找并显示给定用户名的记录。

6、在哈希函数确定的前提下，尝试各种不同类型处理冲突的方法（至少两种），考察平均查找长度的变化。

-1, each record has the following data items: telephone number, user name, address

2,　the keyboard input of each record, respectively, with the phone number and user name as the key word to establish a hash table

3, the hash conflict

4, to find and display the number of a given phone number of records

5, find and display a given user name of the record.

6, in the context of the hash function to determine the various types of different types of processing methods of conflict (at least two), to investigate the change in the average length of search.