UVa-455 周期串

思路：

      利用周期。从周期为1到周期为size()循环

陷阱：

        输出很坑。要求两个输出之前空一行，第一行之前不空。如图：

微信图片_20200101213959.png

#include <iostream>
using namespace std;
int main()
{
    
    FILE *fin=freopen("xt3-4in.txt","r",stdin);
    int t;string str;
    cin >> t;
    while (t--)
    {
        cin >> str;
        int k = str.size();
        for (unsigned i = 1; i <= str.size(); i++)
        {
            bool bol = false;
            if (str.size() % i != 0)
                continue;
            for (unsigned j = 0; j != str.size() - i; j++)
            {
                if (str[j] != str[j + i])
                    bol = true;
            }
            if (bol)
                continue;
            k = i;
            break;
        }
        cout << k << endl;
        if (t)
            cout << endl;
    }
}