一看就懂，c++

没有比我这更简单的了吧，一个字：清晰易懂

#include<iostream>
#include<string>
using namespace std;

string HJ96(string s) {
    if (s.empty())
        return s;

    int n = s.size();

    string res = "";

    bool isnum = false;

    for (auto c : s) {
        if (isdigit(c)) {
            if ( !isnum )
                res += "*";

            res += c;
            isnum = true;
        }
        else
        {
            if (isnum) {
                res += "*";
                isnum = false;
            }

            res += c;
        }
    }

    if (isnum)
        res += "*";

    return res;
}

int main()
{

    string s1;
    while (cin >> s1 ) {
        cout << HJ96(s1) << endl;

    }
    return 0;
}