Find One or More Criminals in a Hunt- Explanation

Can anyone explain how this is able to solve the challenge

// example crowd gathering
let crowd = 'P1P5P4CCCP2P6P3';

let reCriminals =** /[.|C]+/**; // Change this line

let matchedCriminals = crowd.match(reCriminals);

You’re matching one or more of ., | or C.

Remember that inside a character set (these brackets []) you’re matching the character itself, so . and | aren’t doing anything special there.

You can basically do this and still pass (note that there’s no P in there):


Of course, something like /C+/ is more appropriate.

Thanks, I later understood what was going on. it just felt so weird that i couldn’t wrap my head around how it worked at that time