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importjava.util.Scanner;importjava.util.regex.*;publicclassSolution{publicstaticvoidmain(String[]args){Scannerin=newScanner(System.in);inttestCases=Integer.parseInt(in.nextLine());while(testCases>0){Stringpattern=in.nextLine();//Write your codetry{Patternpattern2=Pattern.compile(pattern);System.out.println("Valid");}catch(Exceptionerr){System.out.println("Invalid");}testCases--;}}}
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Pattern Syntax Checker
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