题解 | 统计字符

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

int main() {
    string target;
    while ( getline(cin, target)) {
        if (target == "#") break;
        string str;
        getline(cin, str);
        for (int i = 0; i < target.size(); i++) {
            int count = 0;
            for (int j = 0; j < str.size(); j++) {
                if (str[j] == target[i]) {
                    count++;
                }
            }
            cout << target[i] << " " << count << endl;
        }
        getline(cin, target);
    }
}
// 64 位输出请用 printf("%lld")