题解 | #找位置#

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

const int N = 101;

string str;
vector<int> pos[N];

int main() {
    while (cin >> str) {
        for(int i = 0; i < str.size(); i ++){
            pos[str[i]].push_back(i);
        }
        for(int i = 0; i < str.size(); i ++){
            if(pos[str[i]].size() > 1){
                for(int j = 0; j < pos[str[i]].size(); j ++){
                    if(j == 0) cout << str[i] << ":" << pos[str[i]][j];
                    else  cout << "," <<str[i] << ":" << pos[str[i]][j];
                }
                pos[str[i]].clear();
                cout << endl;
            }
        }
    }
    return 0;
}
// 64 位输出请用 printf("%lld")