TheNextNumber

gistfile1.txt

def getIndex(list: List[List[Int]]) : Int = {

0
}

val num = "06233"
val a = num.split("").sliding(2).toList
var index = 0
(a.length -1  to 0 by -1) foreach { n=>
  val current = a(n).toSeq(1)
  val next= a(n).toSeq(0)
  println(s"$n $next $current")
  if (current >= next){
    if (current == next){
      index = a.length - n - 1
    }else{
      index = a.length - n

    }
  }
}

val (b, c) = num.splitAt(index)

val convertb = b.last.toString.toInt
// c안에서 b.tail보다 큰 수중에 가장 작은 수의 인덱스

val convertc = c.split("").map(_.toInt)
val (frontList, backList) = convertc.span(x => {
  x < convertb
})

val result = convertc.find(x => {
  x < convertb
}) match {
  case Some(findIndex) => "11"
  case None => b.init + c.last + (c.init + b.last).sorted
}