public class Count {
    public static void main(String[] args) throws IOException {
        (new CountChar()).count();
    }
}

class CountChar {
    public void count() throws IOException {
        char ch;
        int m = 0;
        int n = 0;
        int o = 0;
        int p = 0;
        Map<String,HashSet<Character>> map = new HashMap<String,HashSet<Character>>();
        System.out.println("please input string");
        do {
            ch = (char) System.in.read();
            if(ch >= 'A' && ch <= 'Z' || ch >= 'a' && ch <= 'z'){
                if(map.containsKey("英文字母")){
                    map.get("英文字母").add(ch);
                }
                else{
                    HashSet<Character> chs = new HashSet<Character>();
                    chs.add(ch);
                    map.put("英文字母", chs);
                }
                m++;
                
            } else if (ch >= '0' && ch <= '9'){
                if(map.containsKey("数字")){
                    map.get("数字").add(ch);
                }
                else{
                    HashSet<Character> chs = new HashSet<Character>();
                    chs.add(ch);
                    map.put("数字", chs);
                }
                n += 1;
            } else if (ch == ' ') {
                if(map.containsKey("其他字符")){
                    map.get("其他字符").add(ch);
                }
                else{
                    HashSet<Character> chs = new HashSet<Character>();
                    chs.add(ch);
                    map.put("其他字符", chs);
                }
                o += 1;
            }else{
                if(map.containsKey("其他字符")){
                    map.get("其他字符").add(ch);
                }
                else{
                    HashSet<Character> chs = new HashSet<Character>();
                    chs.add(ch);
                    map.put("其他字符", chs);
                }
                System.out.println(ch=='\r'||ch=='\n');//你这里的其他字符就是这两个字符。没有统计错吧
                p += 1;
            }
        } while (ch != '\n');
        System.out.println("英语字母有" + m + "个");
        System.out.println("数字有" + n + "个");
        System.out.println("空格有" + o + "个");
        System.out.println("其他字符有" + p + "个");
        System.out.println(map);

    }
}