[Bagels] #Scala #BigBookPython #qu4nt

bagels.scala

import scala.io.StdIn.readLine
import scala.util.Random
import scala.util.control.Breaks.break
import scala.collection.mutable.ListBuffer

val NUM_DIGITS = 3
val MAX_GUESSES = 10

@main def main: Unit = {
  println(s"""Bagels, a deductive logic game.

I am thinking of a $NUM_DIGITS-digit number with no repeated digits.
Try to guess what it is. Here are some clues:
When I say:    That means:
  Pico         One digit is correct but in the wrong position.
  Fermi        One digit is correct and in the right position.
  Bagels       No digit is correct.

For example, if the secret number was 248 and your guess was 843, the
clues would be Fermi Pico.""")

  while (true) {
    val secretNum = getSecretNum
    println("I have thought up a number.")
    println(s"""You have $MAX_GUESSES guesses to get it.""")

    var numGuesses = 1
    while (numGuesses <= MAX_GUESSES) {
      var guess = ""
      while ((guess.length != NUM_DIGITS) || !guess.forall(_.isDigit)) {
        println(s"Guess #$numGuesses: ")
        guess = readLine("> ")
      }
      var clues = getClues(guess, secretNum)
      println(clues)
      numGuesses += 1

      if (guess == secretNum) then break
      if (numGuesses > MAX_GUESSES) {
        println("You ran out of guesses.")
        println(s"The answer was $secretNum.")
      }
    }

    println("Do you want to play again? (yes or no)")
    val check = readLine("> ")
    if (check.toLowerCase.startsWith("y") != true) then break
  }
}

def getSecretNum: String = {
  Random.shuffle((0 to 9).toList).slice(0, 3).mkString
}

def getClues(guess: String, secretNum: String): String = {

  var clues = new ListBuffer[String]()
  if (guess == secretNum) {
    return "You got it"
  } else {
    for (i <- 0 until NUM_DIGITS) {
      if guess(i) == secretNum(i) then clues += "Fermi"
      else if (secretNum.contains(guess(i))) then clues += "Pico"
    }
  }
  if (clues.length == 0) then return "Bagels"
  else return clues.sorted.mkString(" ")
}