Scala program to reverse a string

Program to reverse a string in Scala

object myObject {
    def reverseString(newString: String): String = {
        var revString = ""
        val n = newString.length()
        for(i <- 0 to n-1){
            revString = revString.concat(newString.charAt(n-i-1).toString)
        }
    return revString
    }
    def main(args: Array[String]) {
        var newString = "IncludeHelp"
        println("Reverse of '" + newString + "' is '" + reverseString(newString) + "'")
    }
}

Output

Reverse of 'IncludeHelp' is 'pleHedulcnI'

Another method will be to convert the string into a list and then reversing the list and the converting in back to the string.

Program:

object myObject {
    def main(args: Array[String]) {
        var newString = "IncludeHelp"
        var revString = newString.foldLeft(List[Char]()){(x,y)=>y::x}.mkString("")
        println("Reverse of '" + newString + "' is '" + revString + "'")
    }
}

Output

Reverse of 'IncludeHelp' is 'pleHedulcnI'