有会写的么，麻烦私发我一下

Question

 

Answer 1

public class CountStr{

    public static void main(String[] args) {
        System.out.println(getStrCount(getStr()));
    }

    public static String getStr(){
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入要统计字符数量的字符串：");
        return scanner.next();
    }

    public static HashMap<Character, Integer> getStrCount(String str){
        HashMap<Character, Integer> map = new HashMap<>();
        for (int i = 0; i < str.length(); i++){
            map.merge(str.charAt(i), 1, Integer::sum);
        }
        return map;
    }

}