读取两个文件中的内容，并识别关键字统计关键字的个数，利用哈希表的开放地址发和链地址法进行保存，并计算两个文件的差异性大小，输出用两种方法进行哈希表计算的效率比较。-Read the contents of the two files, and identifies the number of keyword statistics keyword, use an open address hash table address method development and chains to save, and calculate the difference between the size of the two files, the output of two ways hash table to calculate the efficiency of the comparison.