The values of this enumeration can be combined with the bitwise logical operators , so the 可以使用按位逻辑运算符对此枚举的值进行组合,因此
The second improved algorithm uses bitwise techniques and it adopts the bad character rule of bm algorithm . the algorithm is very rapid in practical running 第二种是基于位逻辑运算符的算法,该算法采用了bm的坏字符规则,在实际运行中速度很快。