C++ 代码

#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin>>n;
    while(n--){
        string s;
        cin>>s;
        int l=0,r=0,cnt=0;
        char c;
        int len=s.size();
        while(l<len&&r<len){
            r=l;
            while(s[r]==s[r+1]) r++;
            if(r-l+1>cnt) cnt=r-l+1,c=s[r];
            l=r+1;
        }
        cout<<c<<" "<<cnt<<endl;
    }
    return 0;
}