一个字符串匹配查询算法。程序在文件中读取字符串。可以采用正则表达式来实现字符串匹配功能。一种简单的正则表达式是由英文字母（区分大小写）、数字及通配符“*”和“?”任意组合而成的。“?”代表任意一个字符，“*”代表零个或任意多个字符。根据输入的表达式，输出文件中符合的字符串-A query string matching algorithm. The program read in the file string. You can use regular expressions to achieve string matching. A simple regular expression by letters (case sensitive), numbers and wildcard "*" and "?" Any combination. "?" Represents any one character, "*" represents zero or any number of characters. Expression according to the input and output files match the string