String字符串排序1.8 lamda表达式以及1.7自定义排序

Posted 2021-11-05 jabez1992

// 1.8

public class text {
    public static void main(String[] args) {
        String s1 = "哈哈哈11,呵呵呵22,嘿嘿33,四44";
        List<String> collect = Arrays.stream(s1.split(",")).sorted((str2, str1) -> {
            Integer int1 = Integer.valueOf(str1.replaceAll("[^0-9]", ""));
            Integer int2 = Integer.valueOf(str2.replaceAll("[^0-9]", ""));
            return int1 - int2;
        }).map(str -> str.replaceAll("[0-9]", "")) .collect(Collectors.toList());
        System.out.println(collect);
    }
}

//1.7

public class text {
    public static void main(String[] args) {
        String s1 = "哈哈哈11,呵呵呵22,嘿嘿33,四44";
        List<String> strings = Arrays.asList(s1.split(","));
        Collections.sort(strings, new Comparator<String>() {
            @Override
            public int compare(String str1, String str2) {
                return Integer.valueOf(str1.replaceAll("[^0-9]", "")) - Integer.valueOf(str2.replaceAll("[^0-9]", ""));
            }
        });
        System.out.println(strings);
    }
}