题目描述

C++代码

样例

#include<iostream>
#include<algorithm>
#include<string>
#include<vector>
#include<unordered_map>
using namespace std;
int main()
{
    string s;
    unordered_map<string, int> mp;
    getline(cin, s);
    int sz = s.size();
    string a;
    for (int i = 0; i < sz; i++)
    {
        if (!a.size() && ((s[i] >= '0' && s[i] <= '9') || (s[i] >= 'a' && s[i] <= 'z') || (s[i] >= 'A' && s[i] <= 'Z')))
        {
            if (s[i] >= 'A' && s[i] <= 'Z') {
                s[i] += 32;
            }
            a += s[i];
        }
        else {
            if ((s[i] >= '0' && s[i] <= '9') || (s[i] >= 'a' && s[i] <= 'z') || (s[i] >= 'A' && s[i] <= 'Z')) {
                if (s[i] >= 'A' && s[i] <= 'Z') {
                    s[i] += 32;
                }
                a += s[i];
            }
            else if (a != "") {
                mp[a]++;
                a = "";
            }
        }
    }
    if (a.size())
    {
        mp[a]++;
    }
    int res = -1;
    string p;
    for (const auto& t : mp)
    {
        string frist = t.first;
        int second = t.second;
        if (second > res || (second == res && frist < p))
        {
            res = second;
            p = frist;
        }
    }
    cout << p << " " << res;
    return 0;
}