算法之字符串找出最长的数字串

 

 分析和思路：while循环判断是否是数字且相等，相等则进入循环，用变量保存较大值即可

// TheLongestNumber.cpp : 此文件包含 "main" 函数。程序执行将在此处开始并结束。
//
#include <iostream>
#include "iostream"
#include "string"
#include "vector"
using namespace std;

int main()
{
    string input;
    while (cin >> input)
    {
        int max = 0;
        vector<string> v;
        for (int i = 0; i < input.size(); i++)
        {
            int count = 0;
            if (input[i] >= '0'&&input[i] <= '9')
            {
                string temp;
                while (i < input.size() && (input[i] >= '0'&&input[i] <= '9'))
                {
                    temp.append(1, input[i]);
                    count++;
                    i++;
                }
                if (count > max)
                {
                    v.clear();
                    max = count;
                    v.push_back(temp);
                }
                else  if (count == max)
                {
                    max = count;
                    v.push_back(temp);
                }
            }

        }
        if (v.size() == 1)
        {
            cout << v[0] << "," << v[0].size()<<endl;
        }
        else
        {
            for (int i = 0; i < v.size(); i++)
            {
                cout << v[i];

            }
            cout << ",";
            cout << v[0].size() << endl;
        }
        
    }
    return 0;
}