Sometime you need some help to search or validate entries in your code that matches certain of pattern, It can cause so much deception because the amount of code to accomplish the task. That is Regex (Regular Expressions) comes to help us to minimize our job.
Regex is a sequence of characters that define a search pattern. Such patterns are used by searching for one or more that matches of a specific string or for input validation
It will present a Password Validation with Regular Expressions (Regex)