val k = Array(Array("s","2","20"),Array("sw","3","3"))
我如何转换为以下形式的字符串：
"[[s,2,20],[sw,3,3]]"
liuzengmis 回答：如何以格式化方式打印数组的数组？
您可以使用Array类的mkString方法：
println(k.map(_.mkString("[",","]")).mkString("[","]"))
尝试一下：
object DemoAbc extends App {
val k = Array(Array("s","2","20"),Array("sw","3","3"))
val r = k.map(_.toList).toList
println(r.toString.replaceAll("List","").replaceAll("\\(","[").replaceAll("\\)","]"))
}