Day 20- Java Pattern Syntax Checkers|| Hackerrank Java Solutions || Hindi
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What = Java Hackerrank Series
Why = To get basic idea about java and gain some knowledge about java programming
How = By Solving 2-3 problems daily
In this video we will see this problem
Using Regex, we can easily match or search for patterns in a text. Before searching for a pattern, we have to specify one using some well-defined syntax.
In this problem, you are given a pattern. You have to check whether the syntax of the given pattern is valid.
Note: In this problem, a regex is only valid if you can compile it using the Pattern.compile method.
Input Format
The first line of input contains an integer , denoting the number of test cases. The next lines contain a string of any printable characters representing the pattern of a regex.
Output Format
For each test case, print Valid if the syntax of the given pattern is correct. Otherwise, print Invalid. Do not print the quotes.
Sample Input
3
([A-Z])(.+)
[AZ[a-z](a-z)
batcatpat(nat
Sample Output
Valid
Invalid
Invalid
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