export function maxDigit(n: number): number {
  // Escribe tu solución aquí
  if( n === 0) return 0
  let max = 0

  while(n > 0){
    let digit = n % 10
    console.log(digit)
    if(digit > max){
      max = digit
    }
    n = Math.floor(n / 10)
  }
  return max
}