P12: Decode run-length encoding

Following is the direct solution:

1:  def decode(list:List[(Int,Any)]):List[Any] = {  
2:     val b = new ListBuffer[Any]()  
3:     var temp = list  
4:     while(!temp.isEmpty){  
5:     for(i<- 1 to temp.head._1){  
6:      b+=temp.head._2 }  
7:     temp = temp.tail  
8:     }  
9:     b.toList  
10:     }  
11:  println("input List = "+dlist)  
12:  println(decode(dlist))  

The input:
List((6,'a), (2,'c), (4,'e))
The output:
List('a, 'a, 'a, 'a, 'a, 'a, 'c, 'c, 'e, 'e, 'e, 'e)