去重Distinct() 随机排序RandomSortList()

string bannerword="最、最佳、最具、最爱、最赚、最优、最优秀、最好、最大、最大程度";
List<string> list = bannerword.Split('、').ToList().Where(c => !string.IsNullOrEmpty(c)).Distinct().ToList();
list =RandomSortList(list);
bannerword = string.Join("、", list.ToArray());