alandipert · July 17, 2020 15:24
diff --git a/permute.js b/permute.js
 const removeAt = (xs, i) => xs.filter((x, j) => j !== i);

 const permute = xs => xs.length
      ? xs.flatMap((x, i) => permute(removeAt(xs, i)).map(ys => [x, ...ys]))
      : [[]];
	const removeAt = (xs, i) => xs.filter((x, j) => j !== i);

	const permute = xs => xs.length
	? xs.flatMap((x, i) => permute(removeAt(xs, i)).map(ys => [x, ...ys]))
	: [[]];