C++ 代码

#include <bits/stdc++.h>

using namespace std;

int main()
{
    string a;
    char c;
    int t,sum = 1,maxn = 1;
    cin>>t;
    while(t--)
    {
        cin >> a;
        sum = 1;
        maxn = 1;
        for(int i= 0 ; i < a.size()-1; i ++)
        {
            if(a[i] == a[i+1])
            {
                sum ++;
            }
            if(sum > maxn)
            {
                maxn = sum;
                c = a[i];
            }
            if(a[i] != a[i+1])
            {
                sum = 1;
            }
        }
        if(maxn == 1)
            cout << a[0] << " " << maxn << endl;
        else
            cout << c <<" "<< maxn << endl;
    }
    return 0;
}