Intの配列を定義する。
scala> val a1 = new Array[Int](10) a1: Array[Int] = Array(0, 0, 0, 0, 0, 0, 0, 0, 0, 0) scala> val a2 = Array(1,2,3) a2: Array[Int] = Array(1, 2, 3) scala> a2(0) = 100 scala> val num = a2(1) num: Int = 2 scala> a2.length res2: Int = 3 scala> a2 res3: Array[Int] = Array(100, 2, 3) scala> a1 res4: Array[Int] = Array(0, 0, 0, 0, 0, 0, 0, 0, 0, 0)