C++9018:2325——压缩字符串

#include <bits/stdc++.h>
using namespace std;

int main(){
    string a;
    int x = 0,len;
    cin >> a;
    len = a.size()-1;
    for (int i = 0;i <= len;i++){
        if (a[i] == a[i+1]) x++;
        else{
            if (x == 0)cout << a[i];
            else{
                cout << ++x << a[i];
                x = 0;
            }
        }
    }
    return 0;
}