將數組中指定數量的元素移動數組後面

static void Main() 

{ 

    int[] array = { 1, 2, 3, 4, 5, 6, 7 }; 

    MoveNumberArrayToEnd(array, 3); 

} 

static void MoveNumberArrayToEnd<T>(IList<T> arrayList, int num) 

{ 

    if (arrayList.Count == 0 || arrayList.Count < num) 

    { 

        throw new RankException(); 

    } 

    var query = (from number in arrayList 

                 orderby number descending 

                 select number).Take(arrayList.Count - num).Concat(arrayList.Take(num)); 

    query.ToList().ForEach(q => Console.WriteLine("{0}", q)); 

}   

摘自 wh_go的專欄