宝马740li气囊炸开后 又换了新气囊 电脑版怎样编程?

objectMainextendsApp{
    varreverse_pairs = 0//逆序数
    defmsort[T](cmp:(T, T) => Boolean)(l:List[T]):List[T] = {
        defmerge(l1:List[T], l2:List[T]):List[T]=(l1, l2)match{
            case(Nil, _) => l2
            case(_, Nil) => l1
            case(x::left1, y::left2) =>
                if(cmp(x, y))
                    x::merge(left1, l2)
                else{
                    reverse_pairs += l1.length
                    y::merge(l1, left2)
                }
        }
        valn = l.length / 2
        if(n == 0)
            return l
        else{
            val(l1, l2) = l.splitAt(n)
            merge(msort(cmp)(l1), msort(cmp)(l2))
        }
    }
    println(msort((x:Int, y:Int) => x    println(reverse_pairs)
}