function findDuplicates(numbers: number[]): number[] {
  // Escribe tu solución aquí

  const duplicatedNumbers = [...new Set(numbers)].reduce((acc, currentValue) => {

    const isDuplicated = numbers.filter(value => value === currentValue).length >= 2

    if (!isDuplicated) return acc

    acc.push(currentValue)

    return acc
  }, [])

  return duplicatedNumbers.sort()
}

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