scala> val xs = Array("10", "10", "10")
xs: Array[String] = Array(10, 10, 10)

scala> def parseInt(s:String) = Integer.parseInt(s, 10)
parseInt: (s: String)Int

scala> parseInt(xs(0))
res1: Int = 10

scala> parseInt(xs(1))
res2: Int = 10

scala> parseInt(xs(2))
res3: Int = 10

scala> xs map parseInt
res4: Array[Int] = Array(10, 10, 10)