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Fisher Yates Shuffle

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export const shuffle = (array) => {
  let maxLength = array.length
  let temp
  let idx

  // While there remain elements to shuffle...
  while (maxLength) {
    // Pick a remaining element...
    idx = Math.floor(Math.random() * maxLength--)

    // And swap it with the current element
    temp = array[maxLength]
    array[maxLength] = array[idx]
    array[idx] = temp
  }

  return array
}