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quinnlas/mystery.js

Last active April 24, 2023 23:41
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What does this function do?
Raw
mystery.js
const fn = (n, a = [[], '']) => n in a ? !!a[n] : (a.push(...a), fn(n, a))
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quinnlas commented Apr 3, 2023 •
edited
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Hint 1: Formatted code: 
function fn (n, a = [[], '']) {
  if (n in a) {
    return !!a[n]
  } else {
    a.push(...a)
    return fn(n, a)
  }
}
Hint 2:

Remember the difference between in and of.

Hint 3:

The function is meant to be called with 1 parameter, a number. Try some examples to see what the output is.

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