Scala solution to the Word Wrap Kata performed during 2013-05-18 at @softonic 's #katayuno

WordWrap.scala

object WordWrap {
  /**
   * Returns the <code>input</code> text split into lines of length
   * smaller or equal to <code>maxLength</code>. The newline
   * character is not consistent with the platform, it's always a
   * CR character. This input processing also replaces
   * consecutive blank spaces with a single blank space.
   *
   * @param input the text we want to process.
   * @param the maximum length of a line
   */
  def wrap(input : String, maxLength : Int) = {
    input.split (" ").foldLeft ("")(
      (acc, in) =>
        if (in equals "") acc else if ((acc.length - acc.lastIndexOf('\n') + in.length()) < maxLength) { acc + " " + in }
        else { acc + '\n' + in }).trim
  }
}

  def wrap(input : String, maxLength : Int) = {
    input.split (" ").foldLeft (("", 0))(
      (acc, in) =>
        if (in equals "") acc else if ((acc._2 + in.length()) < maxLength) { (acc._1 + " " + in, acc._2 + in.length()) }
        else { (acc._1 + '\n' + in, in.length()) })._1.trim
  }

Yes it can be done. :D