哈希表的设计与实现：

针对年级中的“人名”设计一个哈希表，使得平均查找长度不超过指定值；并完成相应的建表和查表程序。-Hash Table Design and Implementation: The Year of the　names　to design a hash table, making an average to find the length of not more than specified value　and completed the appropriate procedures to build tables and look-up table.