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Give you a string   s   And a character rule   p. Please implement a support '.'   and  '*'  Regular expression match for. '.' matches any single character '*' matches zero or more preceding elements The so-called matching is to cover   whole   character string   s, not part of the string. Example ...

DAY12 review 1. Regular expression Function: take the rules we specify to judge whether the data conforms to this rule Specify rule: String regex = "[0-9]{17}[0-9X]";Compare the data with the rule: input.matches(regex) – > if it matches, the matches method returns true 2. Packaging There are only two types of data types ...

sed advanced command brief introduction Sed is a stream editor. It is a very important tool in text processing. It can be used perfectly with regular expressions and has extraordinary functions. During processing, the currently processed line is stored in a temporary buffer called "pattern space", and then the contents in the bu ...

Spring Cloud Gateway's built-in filter factory Built-in filter factory Here is a simple table of all the filter factories built into Spring Cloud Gateway. Filter FactoryEffectparameterAddRequestHeaderAdd a Header for the original requestName and value of HeaderAddRequestParameterAdd request parameters to the original requestParameter name an ...