Problem:
Toggling Cases

Write a program which converts uppercase/lowercase letters to lowercase/uppercase for a given string.

Input

A string is given in a line.

Output

Print the converted string in a line. Note that you do not need to convert any characters other than alphabetical letters.

Constraints

The length of the input string < 1200

Sample Input

fAIR, LATER, OCCASIONALLY CLOUDY.

Sample Output

Fair, later, occasionally cloudy.

Solution in Scala (judge verdict: Accepted)

object Main extends App {
  val scanner = new java.util.Scanner(System.in)

  val input = scanner.nextLine()

  val output = input.map { c =>
    if(c.isLower) c.toUpper
    else          c.toLower
  }

  println(output)
}