用for循环去重

// 知识点name进行去重

            for (int i = 0; i < knowNamesList.size() - 1;i++) {

                for (int j = knowNamesList.size() - 1; j > i; j--) {

                   if (knowNamesList.get(j).equals(knowNamesList.get(i))) {

                       knowNamesList.remove(j);

                   }

                }

            }