Fun with Regex

Anurag just learnt about Regex (Regular expressions) in college. Regex can be understood as a really cool way to represent a certain pattern in the string. Regex has various symbols that have different meanings. One such symbol is the ‘*’ (star symbol) which denotes that a character can be repeated one or many times. For eg: a* represents a, aa, aaa, aaaa and so on. As you can see the star symbol