LinkedHashSet<String> set = new LinkedHashSet<String>(arrayList.size());
set.addAll(arrayList);
arrayList.clear();
arrayList.addAll(set);
-flq 2018-09-01 20:13 原文
LinkedHashSet<String> set = new LinkedHashSet<String>(arrayList.size());
set.addAll(arrayList);
arrayList.clear();
arrayList.addAll(set);