Scala地图排序

val t = TreeMap("01" -> List(34,34))

//If  you have already a map...
val m = Map("01" -> List(34,34))
//... use this
val t = TreeMap(m.toSeq:_*)

您也可以将其转换为Seq或List，并进行排序：

//by specifying an element for sorting
m.toSeq.sortBy(_._1) //sort by comparing keys
m.toSeq.sortBy(_._2) //sort by comparing values

//by providing a sort function
m.toSeq.sortWith(_._1 < _._1) //sort by comparing keys

在某种情况下，有很多可能性，或多或少地方便。