Java 排序字符串

Posted 2023-02-15 yayun0516

    public static void main(String[] args) 
        // write your code here

        String test = "jjjkkkffffggg";
        List<Character> list = new ArrayList<>();
        for (int i = 0; i < test.length(); i++) 
            list.add(test.charAt(i));
        
        list.sort((a, b) -> 
            return b - a;
        );

        StringBuffer stringBuffer = new StringBuffer();
        for (Character character : list) 
            stringBuffer.append(character);
        
        System.out.println(stringBuffer.toString());