Question

How to get the reciprocal of the letters in a string with Scala

Answer 1

object Main extends App {
  def getReciprocal(s: String): String = {
    s.map {
      case ch if ch >= 'A' && ch <= 'Z' => ('Z' - (ch - 'A')).toChar
      case ch if ch >= 'a' && ch <= 'z' => ('z' - (ch - 'a')).toChar
      case ch => ch
    }.mkString
  }

  val s = "abc++def"
  
  val result = getReciprocal(s)
  
  println(result) 
}



   
/*
run:
   
zyx++wvu
   
*/

 

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