Scala Palindromes

gistfile1.scala

def isPalindromeReversing(str: String): Boolean = str.reverse == str
def isPalindrome(str: String) = {
  val half = str.length / 2
  val firstHalf = str.take(half)
  val secondHalf = str.drop({
    if(str.length % 2 != 0)
      half + 1
    else
      half
  })
  
  firstHalf.foldLeft(new scala.collection.immutable.Stack[Char]) {
    case(stack, pushChar) => stack.push(pushChar)
  }.zip(secondHalf).forall{case(l, r) => l == r}    
}


val results = List(
  ("1221", true),
  ("14761255216741", true),
  ("173", false)
)

List(isPalindromeReversing _, isPalindrome _).forall(f => {
  results.map{case(test, answer) => f(test) == answer}.forall(identity)
}) == true