俩个集合调用contains 方法,实际就是遍历,是否当前元素在另一个集合里
object TestArrContains {
def main(args: Array[String]): Unit = {
val arr1 = Array("1_2","2-3","3-4","4-5")
val arr2 = Array("1_2","2-3","4-5")
arr1.filter{
// def contains[A1 >: A](elem: A1): Boolean = exists (_ == elem)
case arr1=> {
println("---")
arr2.contains(arr1)
}
}
arr1.foreach(println(_))
}
}