Max Product Of Three

TypeScript Max Product Of Three

function maxProductOfThree(a: number[]): number {
  const sorted = [...a].sort((x, y) => x - y);
  const c = sorted.length;

  return Math.max(
    sorted[c - 1] * sorted[c - 2] * sorted[c - 3],
    sorted[0] * sorted[1] * sorted[c - 1]
  );
}

This checks the useful extremes, because the best product can come from either the three largest numbers or two negatives plus one large positive.