Quicksort

[broadsw0rd]

const qs = (
  [p, ...xs],
  lesser = xs.filter(_ => _ <= p),
  greater = xs.filter(_ => _ > p)
) => p ? [...qs(lesser), p, ...qs(greater)] : []

// qsort([20, 11, 2, 7, 89, -9, 34, 14, 0, 20]) -> [-9, 2, 7, 11, 14, 20, 20, 34, 89]

[lock]

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