c# 判斷一個string[]是否全包含另一個string[]

                // list = normalList.Except(repairList).ToList(); //差集
                // list = normalList.Union(repairList).ToList();   //並集
                list = normalList.Intersect(repairList).ToList(); //交集
                bool result = list.All(repairList.Contains) && list.Count() == repairList.Count();
                if (result)
                {
                    msg = "全包含";
                    return true;
                }
                else
                {
                    msg = "不全包含";
                    return false;
                }