Java -------- 首字母相关排序总结

Java 字符串数组首字母排序java

字符串数组按首字母排序：（区分大小写）数组

String[] strings = new String[]{"ba","aa","CC","Ba","DD","ee","dd"};
   Arrays.sort(strings);
   for (int i = 0; i < strings.length; i++) {
      System.out.print(strings[i]+"----");
   }

输出：Ba----CC----DD----aa----ba----dd----ee----ide

List<String>排序code

List<String> list = new ArrayList<>();
 list.add("Bli");
 list.add("Aa");
 list.add("Ccn");
 list.add("Bal");
 list.add("dm");
 list.add("Dn");
 list.add("lm");
 list.add("cm");
 list.add("aaa");
 Collections.sort(list);

System.out.print(list+"\n");

输出：[Aa, Bal, Bli, Ccn, Dn, aaa, cm, dm, lm]排序

Java 字符串数组首字母排序（不区分大小写）字符串

　//不区分大小写比较
        String source[] = { "dad", "bood", "bada", "Admin", "Aa ", "A ", "Good", "aete", "cc", "Ko", "Beta", "Could" };

        List<String> list = Arrays.asList(source);
        //String.CASE_INSENSITIVE_ORDER A在 a 前面
        Collections.sort(list, String.CASE_INSENSITIVE_ORDER);
        System.out.println(list);

输出：[A , Aa , Admin, aete, bada, Beta, bood, cc, Could, dad, Good, Ko]get

中文首字母排序string

List<String> data = new ArrayList<String>();
        data.add("上海");
        data.add("天津");
        data.add("北京");
        data.add("深圳");
        data.add("广州");
        data.add("成都");
        data.add("西安");
        data.add("武汉");
        data.add("郑州");
        data.add("邯郸");

        Collections.sort(data, new Comparator<String>() {
            Collator collator = Collator.getInstance(Locale.CHINA);

            @Override
            public int compare(String o1, String o2) {
                CollationKey key1 = collator.getCollationKey(o1);
                CollationKey key2 = collator.getCollationKey(o2);
                return key1.compareTo(key2);
            }
        });

        for (String str : data) {
            System.out.print(str+“--”);
        }

输出： 北京--成都--广州--邯郸--上海--深圳--天津--武汉--西安--郑州--io

已上是本身总结的字母排序的案例，但愿对各位有所帮助。class