Problem Statement

Write a program that accepts a name as input and outputs the lyrics to the Shirley Ellis song "The Name Game".

The regular verse Unless your name begins with a vowel (A, E, I, O, U), 'B', 'F' or 'M' you don't have to care about special rules. The verse for the name 'Gary' would be like this: At the end of every line, the name gets repeated without the first letter: Gary becomes ary If we take (X) as the full name (Gary) and (Y) as the name without the first letter (ary) the verse would look like this: Vowel as first letter of the name If you have a vowel as the first letter of your name (e.g. Earl) you do not truncate the name. The verse looks like this: 'B', 'F' or 'M' as first letter of the name In case of a 'B', an 'F' or an 'M' (e.g. Billy, Felix, Mary) there is a special rule. The line which would 'rebuild' the name (e.g. bo-billy) is sung without the first letter of the name. The verse for the name Billy looks like this: For the name 'Felix', this would be right:

Let's start with the solution:

object NameGame extends App {
  private def printVerse(name: String): Unit = {
    val x = name.toLowerCase.capitalize

    val y = if ("AEIOU" contains x.head) x.toLowerCase else x.tail

    val (b, f, m) = x.head match {
      case 'B' => (y, "f" + y, "m" + y)
      case 'F' => ("b" + y, y, "m" + y)
      case 'M' => ("b" + y, "f" + y, y)
      case _   => ("b" + y, "f" + y, "m" + y)
    }

    printf("%s, %s, bo-%s\n", x, x, b)
    printf("Banana-fana fo-%s\n", f)
    println(s"Fee-fi-mo-$m")
    println(s"$x!\n")
  }

  Stream("gAry", "earl", "Billy", "Felix", "Mary", "Steve").foreach(printVerse)
}