# trolo

It must have been 8 kyu

Importing inside a function is frowned upon.
Compilation of a regex is useful if you re-use it. Either define it outside the function (for reuse) or don't bother. Also, when you compile, you can use smiley.match(el).

I don't think thats the point of codewars lmao

clever

str turns the integer into a string. It's the difference between the number 55 and the string "55". To check whether the string "5" is within the number, you first have to convert the number to a string by using str.

That's why this kata is easy, and this one is not: https://www.codewars.com/kata/621f89cc94d4e3001bb99ef4

How can you solve it without creating an array?

Language?

It seems you both have copy & pasted mine