Regex matching string containing specific letters

Question

I have a regular expression that'll match all strings containing the letters 'r' and 'h': /(.*h.*r.*|.*r.*h.*)/

The problem with this method is that it gets very long pretty quickly. If it was 3 letters it would look like this: /(.*h.*r.*k.*|.*h.*k.*r.*|.*r.*k.*h.*|.*r.*h.*k.*|.*k.*h.*r.*|.*k.*r.*h.*)/

Isn't there a simpler way to do this? It just has to match a string containing 1 or more of all letters

Answer 1

r'\w*[hrk]+\w*'

=> any amount (including 0) of other letters, at least one h, r, or k and 0 or any amount of other letters again

Answer 2

Anna where can we learn more about regular expressions

Answer 3

Milan Adhikari You can try Sololearn's tutorial:

https://www.sololearn.com/learn/9704/?ref=app

There are good resources on the web, too