处理带通配符的字符串匹配问题，实现的是已被收录SCI检索的一篇国际期刊论文中的SAIL算法，该算法被认为处理同类型问题中效果最好的近似算法。论文为：Efficient String Matching with Wildcards and Length Constraints-The algorithm is SAIL.It is considered as the best one in dealing with the problem "pattern matching with wildca