如何获取hashmap Scala中可能的值对组合

val hashMap = scala.collection.mutable.HashMap("key1" -> "value1", "key2" -> "value2", "key3" -> "value3")
val keys = hashMap.keySet
val values = hashMap.values

val keyValuePairs = keys.zip(values)

val hashMap = scala.collection.mutable.HashMap("key1" -> "value1", "key2" -> "value2", "key3" -> "value3")
val iterator = hashMap.iterator

while (iterator.hasNext) {
  val entry = iterator.next()
  val key = entry._1
  val value = entry._2
  // 处理键值对
}

val hashMap = scala.collection.mutable.HashMap("key1" -> "value1", "key2" -> "value2", "key3" -> "value3")

hashMap.foreach { case (key, value) =>
  // 处理键值对
}

val hashMap = scala.collection.mutable.HashMap("key1" -> "value1", "key2" -> "value2", "key3" -> "value3")
val keyValuePairs = hashMap.toList

for ((key, value) <- keyValuePairs) {
  // 处理键值对
}