Take all the possible answers with duplicates removed, and return the first one in alphabetical order.

input: "bcabc"

output: "abc"

Nothing. I hadn't fleshed out my idea yet and that's the error I thought could exist. My solution is wrong.

that is a single line of code in javascript, assuming you just want the value in #5 const foo = [...new Set('bcabc'.split(''))].join('')