Math.scala

import scodec.bits.*

object Math {

  def extractN(x: BigInt, alphabet: Int, n: Int): String = {
    val array = new Array[Int](n)
       
    (0 until n).foldLeft(x)((agg, idx) => {
      val (next, rem) = agg /% alphabet
      array(idx) = rem.toInt
      next
    })
    array.mkString
  }
  
  def extractNDigits(vec: ByteVector, n: Int) = extractN(BigInt(vec.sha1.toHex, 16), 10, n)
}