Java 字符串数组首字母排序
字符串数组按首字母排序:(区分大小写)
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----
List<String>排序
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]
Java 字符串数组首字母排序(不区分大小写)
//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]
中文首字母排序
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--
已上是自己总结的字母排序的案例,希望对各位有所帮助。