scala---排序和累加

1.排序

val list= List(1,2,3,4,5,6,7,8,4)

list.sortWith((a,b)=>if(a>b) true else false).foreach { x => print(x+" ") }

2.累加

 val r = (1 to 100)

 println(r.foldLeft(0)((sum,i)=>sum+i))