function missingNumbers(numbers: number[], n: number): number[] {
  let missing: Array<number> = [];
  let setdata = new Set(numbers);

  for (let i = 1; i <= n; i++) {
    if (setdata.has(i)) continue;
    missing.push(i);
  }

  return missing;
}

// No modificar: necesario para evaluar el resultado.
export { missingNumbers };