Question

How to reverse the case of each character in a string with Scala

Answer 1

object ReverseCase {
  def reverseCase(str: String): String = {
    str.map {
      case ch if ch.isLower => ch.toUpper
      case ch if ch.isUpper => ch.toLower
      case ch => ch
    }
  }

  def main(args: Array[String]): Unit = {
    val s = "ABC++xyz"
    
    val reversed = reverseCase(s)

    println(reversed)
  }
}

 
 
    
/*
run:
    
abc++XYZ
    
*/

 

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