postfixprefixnfadfacompiler-designlexical-analyzerleading-and-trailingtripledirected-acyclic-graphquadrupleshift-reduce-parsersleft-recursion-eliminationleft-recursionnfa-to-dfa-conversionfirst-and-followleft-f
And for postfix the same, but with String.endWith() method. @neveswhy you don't add it? This is so simple. And I need it for real world situation - very simple situation - just a phone number. It cant be validate for all needed formats by simple mask - I can validate it only ...